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464dce18 IS |
1 | /* |
2 | * drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c | |
3 | * Copyright (c) 2016 Mellanox Technologies. All rights reserved. | |
4 | * Copyright (c) 2016 Jiri Pirko <jiri@mellanox.com> | |
5 | * Copyright (c) 2016 Ido Schimmel <idosch@mellanox.com> | |
c723c735 | 6 | * Copyright (c) 2016 Yotam Gigi <yotamg@mellanox.com> |
464dce18 IS |
7 | * |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions are met: | |
10 | * | |
11 | * 1. Redistributions of source code must retain the above copyright | |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * 2. Redistributions in binary form must reproduce the above copyright | |
14 | * notice, this list of conditions and the following disclaimer in the | |
15 | * documentation and/or other materials provided with the distribution. | |
16 | * 3. Neither the names of the copyright holders nor the names of its | |
17 | * contributors may be used to endorse or promote products derived from | |
18 | * this software without specific prior written permission. | |
19 | * | |
20 | * Alternatively, this software may be distributed under the terms of the | |
21 | * GNU General Public License ("GPL") version 2 as published by the Free | |
22 | * Software Foundation. | |
23 | * | |
24 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
25 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | |
28 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
29 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
30 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
31 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
32 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
33 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
34 | * POSSIBILITY OF SUCH DAMAGE. | |
35 | */ | |
36 | ||
37 | #include <linux/kernel.h> | |
38 | #include <linux/types.h> | |
5e9c16cc JP |
39 | #include <linux/rhashtable.h> |
40 | #include <linux/bitops.h> | |
41 | #include <linux/in6.h> | |
c723c735 | 42 | #include <linux/notifier.h> |
df6dd79b | 43 | #include <linux/inetdevice.h> |
9db032bb | 44 | #include <linux/netdevice.h> |
c723c735 | 45 | #include <net/netevent.h> |
6cf3c971 JP |
46 | #include <net/neighbour.h> |
47 | #include <net/arp.h> | |
b45f64d1 | 48 | #include <net/ip_fib.h> |
5d7bfd14 | 49 | #include <net/fib_rules.h> |
57837885 | 50 | #include <net/l3mdev.h> |
464dce18 IS |
51 | |
52 | #include "spectrum.h" | |
53 | #include "core.h" | |
54 | #include "reg.h" | |
e0c0afd8 AS |
55 | #include "spectrum_cnt.h" |
56 | #include "spectrum_dpipe.h" | |
57 | #include "spectrum_router.h" | |
464dce18 | 58 | |
4724ba56 IS |
59 | struct mlxsw_sp_rif { |
60 | struct list_head nexthop_list; | |
61 | struct list_head neigh_list; | |
62 | struct net_device *dev; | |
63 | struct mlxsw_sp_fid *f; | |
64 | unsigned char addr[ETH_ALEN]; | |
65 | int mtu; | |
bf95233e | 66 | u16 rif_index; |
6913229e | 67 | u16 vr_id; |
e0c0afd8 AS |
68 | unsigned int counter_ingress; |
69 | bool counter_ingress_valid; | |
70 | unsigned int counter_egress; | |
71 | bool counter_egress_valid; | |
4724ba56 IS |
72 | }; |
73 | ||
e0c0afd8 AS |
74 | static unsigned int * |
75 | mlxsw_sp_rif_p_counter_get(struct mlxsw_sp_rif *rif, | |
76 | enum mlxsw_sp_rif_counter_dir dir) | |
77 | { | |
78 | switch (dir) { | |
79 | case MLXSW_SP_RIF_COUNTER_EGRESS: | |
80 | return &rif->counter_egress; | |
81 | case MLXSW_SP_RIF_COUNTER_INGRESS: | |
82 | return &rif->counter_ingress; | |
83 | } | |
84 | return NULL; | |
85 | } | |
86 | ||
87 | static bool | |
88 | mlxsw_sp_rif_counter_valid_get(struct mlxsw_sp_rif *rif, | |
89 | enum mlxsw_sp_rif_counter_dir dir) | |
90 | { | |
91 | switch (dir) { | |
92 | case MLXSW_SP_RIF_COUNTER_EGRESS: | |
93 | return rif->counter_egress_valid; | |
94 | case MLXSW_SP_RIF_COUNTER_INGRESS: | |
95 | return rif->counter_ingress_valid; | |
96 | } | |
97 | return false; | |
98 | } | |
99 | ||
100 | static void | |
101 | mlxsw_sp_rif_counter_valid_set(struct mlxsw_sp_rif *rif, | |
102 | enum mlxsw_sp_rif_counter_dir dir, | |
103 | bool valid) | |
104 | { | |
105 | switch (dir) { | |
106 | case MLXSW_SP_RIF_COUNTER_EGRESS: | |
107 | rif->counter_egress_valid = valid; | |
108 | break; | |
109 | case MLXSW_SP_RIF_COUNTER_INGRESS: | |
110 | rif->counter_ingress_valid = valid; | |
111 | break; | |
112 | } | |
113 | } | |
114 | ||
115 | static int mlxsw_sp_rif_counter_edit(struct mlxsw_sp *mlxsw_sp, u16 rif_index, | |
116 | unsigned int counter_index, bool enable, | |
117 | enum mlxsw_sp_rif_counter_dir dir) | |
118 | { | |
119 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
120 | bool is_egress = false; | |
121 | int err; | |
122 | ||
123 | if (dir == MLXSW_SP_RIF_COUNTER_EGRESS) | |
124 | is_egress = true; | |
125 | mlxsw_reg_ritr_rif_pack(ritr_pl, rif_index); | |
126 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
127 | if (err) | |
128 | return err; | |
129 | ||
130 | mlxsw_reg_ritr_counter_pack(ritr_pl, counter_index, enable, | |
131 | is_egress); | |
132 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
133 | } | |
134 | ||
135 | int mlxsw_sp_rif_counter_value_get(struct mlxsw_sp *mlxsw_sp, | |
136 | struct mlxsw_sp_rif *rif, | |
137 | enum mlxsw_sp_rif_counter_dir dir, u64 *cnt) | |
138 | { | |
139 | char ricnt_pl[MLXSW_REG_RICNT_LEN]; | |
140 | unsigned int *p_counter_index; | |
141 | bool valid; | |
142 | int err; | |
143 | ||
144 | valid = mlxsw_sp_rif_counter_valid_get(rif, dir); | |
145 | if (!valid) | |
146 | return -EINVAL; | |
147 | ||
148 | p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir); | |
149 | if (!p_counter_index) | |
150 | return -EINVAL; | |
151 | mlxsw_reg_ricnt_pack(ricnt_pl, *p_counter_index, | |
152 | MLXSW_REG_RICNT_OPCODE_NOP); | |
153 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ricnt), ricnt_pl); | |
154 | if (err) | |
155 | return err; | |
156 | *cnt = mlxsw_reg_ricnt_good_unicast_packets_get(ricnt_pl); | |
157 | return 0; | |
158 | } | |
159 | ||
160 | static int mlxsw_sp_rif_counter_clear(struct mlxsw_sp *mlxsw_sp, | |
161 | unsigned int counter_index) | |
162 | { | |
163 | char ricnt_pl[MLXSW_REG_RICNT_LEN]; | |
164 | ||
165 | mlxsw_reg_ricnt_pack(ricnt_pl, counter_index, | |
166 | MLXSW_REG_RICNT_OPCODE_CLEAR); | |
167 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ricnt), ricnt_pl); | |
168 | } | |
169 | ||
170 | int mlxsw_sp_rif_counter_alloc(struct mlxsw_sp *mlxsw_sp, | |
171 | struct mlxsw_sp_rif *rif, | |
172 | enum mlxsw_sp_rif_counter_dir dir) | |
173 | { | |
174 | unsigned int *p_counter_index; | |
175 | int err; | |
176 | ||
177 | p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir); | |
178 | if (!p_counter_index) | |
179 | return -EINVAL; | |
180 | err = mlxsw_sp_counter_alloc(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF, | |
181 | p_counter_index); | |
182 | if (err) | |
183 | return err; | |
184 | ||
185 | err = mlxsw_sp_rif_counter_clear(mlxsw_sp, *p_counter_index); | |
186 | if (err) | |
187 | goto err_counter_clear; | |
188 | ||
189 | err = mlxsw_sp_rif_counter_edit(mlxsw_sp, rif->rif_index, | |
190 | *p_counter_index, true, dir); | |
191 | if (err) | |
192 | goto err_counter_edit; | |
193 | mlxsw_sp_rif_counter_valid_set(rif, dir, true); | |
194 | return 0; | |
195 | ||
196 | err_counter_edit: | |
197 | err_counter_clear: | |
198 | mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF, | |
199 | *p_counter_index); | |
200 | return err; | |
201 | } | |
202 | ||
203 | void mlxsw_sp_rif_counter_free(struct mlxsw_sp *mlxsw_sp, | |
204 | struct mlxsw_sp_rif *rif, | |
205 | enum mlxsw_sp_rif_counter_dir dir) | |
206 | { | |
207 | unsigned int *p_counter_index; | |
208 | ||
6b1206bb AS |
209 | if (!mlxsw_sp_rif_counter_valid_get(rif, dir)) |
210 | return; | |
211 | ||
e0c0afd8 AS |
212 | p_counter_index = mlxsw_sp_rif_p_counter_get(rif, dir); |
213 | if (WARN_ON(!p_counter_index)) | |
214 | return; | |
215 | mlxsw_sp_rif_counter_edit(mlxsw_sp, rif->rif_index, | |
216 | *p_counter_index, false, dir); | |
217 | mlxsw_sp_counter_free(mlxsw_sp, MLXSW_SP_COUNTER_SUB_POOL_RIF, | |
218 | *p_counter_index); | |
219 | mlxsw_sp_rif_counter_valid_set(rif, dir, false); | |
220 | } | |
221 | ||
4724ba56 IS |
222 | static struct mlxsw_sp_rif * |
223 | mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp, | |
224 | const struct net_device *dev); | |
225 | ||
53342023 JP |
226 | #define mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) \ |
227 | for_each_set_bit(prefix, (prefix_usage)->b, MLXSW_SP_PREFIX_COUNT) | |
228 | ||
6b75c480 JP |
229 | static bool |
230 | mlxsw_sp_prefix_usage_subset(struct mlxsw_sp_prefix_usage *prefix_usage1, | |
231 | struct mlxsw_sp_prefix_usage *prefix_usage2) | |
232 | { | |
233 | unsigned char prefix; | |
234 | ||
235 | mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage1) { | |
236 | if (!test_bit(prefix, prefix_usage2->b)) | |
237 | return false; | |
238 | } | |
239 | return true; | |
240 | } | |
241 | ||
53342023 JP |
242 | static bool |
243 | mlxsw_sp_prefix_usage_eq(struct mlxsw_sp_prefix_usage *prefix_usage1, | |
244 | struct mlxsw_sp_prefix_usage *prefix_usage2) | |
245 | { | |
246 | return !memcmp(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1)); | |
247 | } | |
248 | ||
6b75c480 JP |
249 | static bool |
250 | mlxsw_sp_prefix_usage_none(struct mlxsw_sp_prefix_usage *prefix_usage) | |
251 | { | |
252 | struct mlxsw_sp_prefix_usage prefix_usage_none = {{ 0 } }; | |
253 | ||
254 | return mlxsw_sp_prefix_usage_eq(prefix_usage, &prefix_usage_none); | |
255 | } | |
256 | ||
257 | static void | |
258 | mlxsw_sp_prefix_usage_cpy(struct mlxsw_sp_prefix_usage *prefix_usage1, | |
259 | struct mlxsw_sp_prefix_usage *prefix_usage2) | |
260 | { | |
261 | memcpy(prefix_usage1, prefix_usage2, sizeof(*prefix_usage1)); | |
262 | } | |
263 | ||
5e9c16cc JP |
264 | static void |
265 | mlxsw_sp_prefix_usage_set(struct mlxsw_sp_prefix_usage *prefix_usage, | |
266 | unsigned char prefix_len) | |
267 | { | |
268 | set_bit(prefix_len, prefix_usage->b); | |
269 | } | |
270 | ||
271 | static void | |
272 | mlxsw_sp_prefix_usage_clear(struct mlxsw_sp_prefix_usage *prefix_usage, | |
273 | unsigned char prefix_len) | |
274 | { | |
275 | clear_bit(prefix_len, prefix_usage->b); | |
276 | } | |
277 | ||
278 | struct mlxsw_sp_fib_key { | |
279 | unsigned char addr[sizeof(struct in6_addr)]; | |
280 | unsigned char prefix_len; | |
281 | }; | |
282 | ||
61c503f9 JP |
283 | enum mlxsw_sp_fib_entry_type { |
284 | MLXSW_SP_FIB_ENTRY_TYPE_REMOTE, | |
285 | MLXSW_SP_FIB_ENTRY_TYPE_LOCAL, | |
286 | MLXSW_SP_FIB_ENTRY_TYPE_TRAP, | |
287 | }; | |
288 | ||
a7ff87ac JP |
289 | struct mlxsw_sp_nexthop_group; |
290 | ||
9aecce1c IS |
291 | struct mlxsw_sp_fib_node { |
292 | struct list_head entry_list; | |
b45f64d1 | 293 | struct list_head list; |
9aecce1c | 294 | struct rhash_head ht_node; |
76610ebb | 295 | struct mlxsw_sp_fib *fib; |
5e9c16cc | 296 | struct mlxsw_sp_fib_key key; |
9aecce1c IS |
297 | }; |
298 | ||
299 | struct mlxsw_sp_fib_entry_params { | |
300 | u32 tb_id; | |
301 | u32 prio; | |
302 | u8 tos; | |
303 | u8 type; | |
304 | }; | |
305 | ||
306 | struct mlxsw_sp_fib_entry { | |
307 | struct list_head list; | |
308 | struct mlxsw_sp_fib_node *fib_node; | |
61c503f9 | 309 | enum mlxsw_sp_fib_entry_type type; |
a7ff87ac JP |
310 | struct list_head nexthop_group_node; |
311 | struct mlxsw_sp_nexthop_group *nh_group; | |
9aecce1c | 312 | struct mlxsw_sp_fib_entry_params params; |
013b20f9 | 313 | bool offloaded; |
5e9c16cc JP |
314 | }; |
315 | ||
316 | struct mlxsw_sp_fib { | |
317 | struct rhashtable ht; | |
9aecce1c | 318 | struct list_head node_list; |
76610ebb IS |
319 | struct mlxsw_sp_vr *vr; |
320 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
5e9c16cc JP |
321 | unsigned long prefix_ref_count[MLXSW_SP_PREFIX_COUNT]; |
322 | struct mlxsw_sp_prefix_usage prefix_usage; | |
76610ebb | 323 | enum mlxsw_sp_l3proto proto; |
5e9c16cc JP |
324 | }; |
325 | ||
9aecce1c | 326 | static const struct rhashtable_params mlxsw_sp_fib_ht_params; |
5e9c16cc | 327 | |
76610ebb IS |
328 | static struct mlxsw_sp_fib *mlxsw_sp_fib_create(struct mlxsw_sp_vr *vr, |
329 | enum mlxsw_sp_l3proto proto) | |
5e9c16cc JP |
330 | { |
331 | struct mlxsw_sp_fib *fib; | |
332 | int err; | |
333 | ||
334 | fib = kzalloc(sizeof(*fib), GFP_KERNEL); | |
335 | if (!fib) | |
336 | return ERR_PTR(-ENOMEM); | |
337 | err = rhashtable_init(&fib->ht, &mlxsw_sp_fib_ht_params); | |
338 | if (err) | |
339 | goto err_rhashtable_init; | |
9aecce1c | 340 | INIT_LIST_HEAD(&fib->node_list); |
76610ebb IS |
341 | fib->proto = proto; |
342 | fib->vr = vr; | |
5e9c16cc JP |
343 | return fib; |
344 | ||
345 | err_rhashtable_init: | |
346 | kfree(fib); | |
347 | return ERR_PTR(err); | |
348 | } | |
349 | ||
350 | static void mlxsw_sp_fib_destroy(struct mlxsw_sp_fib *fib) | |
351 | { | |
9aecce1c | 352 | WARN_ON(!list_empty(&fib->node_list)); |
76610ebb | 353 | WARN_ON(fib->lpm_tree); |
5e9c16cc JP |
354 | rhashtable_destroy(&fib->ht); |
355 | kfree(fib); | |
356 | } | |
357 | ||
53342023 | 358 | static struct mlxsw_sp_lpm_tree * |
382dbb40 | 359 | mlxsw_sp_lpm_tree_find_unused(struct mlxsw_sp *mlxsw_sp) |
53342023 JP |
360 | { |
361 | static struct mlxsw_sp_lpm_tree *lpm_tree; | |
362 | int i; | |
363 | ||
8494ab06 IS |
364 | for (i = 0; i < mlxsw_sp->router.lpm.tree_count; i++) { |
365 | lpm_tree = &mlxsw_sp->router.lpm.trees[i]; | |
382dbb40 IS |
366 | if (lpm_tree->ref_count == 0) |
367 | return lpm_tree; | |
53342023 JP |
368 | } |
369 | return NULL; | |
370 | } | |
371 | ||
372 | static int mlxsw_sp_lpm_tree_alloc(struct mlxsw_sp *mlxsw_sp, | |
373 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
374 | { | |
375 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
376 | ||
1a9234e6 IS |
377 | mlxsw_reg_ralta_pack(ralta_pl, true, |
378 | (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto, | |
379 | lpm_tree->id); | |
53342023 JP |
380 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); |
381 | } | |
382 | ||
383 | static int mlxsw_sp_lpm_tree_free(struct mlxsw_sp *mlxsw_sp, | |
384 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
385 | { | |
386 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
387 | ||
1a9234e6 IS |
388 | mlxsw_reg_ralta_pack(ralta_pl, false, |
389 | (enum mlxsw_reg_ralxx_protocol) lpm_tree->proto, | |
390 | lpm_tree->id); | |
53342023 JP |
391 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); |
392 | } | |
393 | ||
394 | static int | |
395 | mlxsw_sp_lpm_tree_left_struct_set(struct mlxsw_sp *mlxsw_sp, | |
396 | struct mlxsw_sp_prefix_usage *prefix_usage, | |
397 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
398 | { | |
399 | char ralst_pl[MLXSW_REG_RALST_LEN]; | |
400 | u8 root_bin = 0; | |
401 | u8 prefix; | |
402 | u8 last_prefix = MLXSW_REG_RALST_BIN_NO_CHILD; | |
403 | ||
404 | mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) | |
405 | root_bin = prefix; | |
406 | ||
407 | mlxsw_reg_ralst_pack(ralst_pl, root_bin, lpm_tree->id); | |
408 | mlxsw_sp_prefix_usage_for_each(prefix, prefix_usage) { | |
409 | if (prefix == 0) | |
410 | continue; | |
411 | mlxsw_reg_ralst_bin_pack(ralst_pl, prefix, last_prefix, | |
412 | MLXSW_REG_RALST_BIN_NO_CHILD); | |
413 | last_prefix = prefix; | |
414 | } | |
415 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralst), ralst_pl); | |
416 | } | |
417 | ||
418 | static struct mlxsw_sp_lpm_tree * | |
419 | mlxsw_sp_lpm_tree_create(struct mlxsw_sp *mlxsw_sp, | |
420 | struct mlxsw_sp_prefix_usage *prefix_usage, | |
382dbb40 | 421 | enum mlxsw_sp_l3proto proto) |
53342023 JP |
422 | { |
423 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
424 | int err; | |
425 | ||
382dbb40 | 426 | lpm_tree = mlxsw_sp_lpm_tree_find_unused(mlxsw_sp); |
53342023 JP |
427 | if (!lpm_tree) |
428 | return ERR_PTR(-EBUSY); | |
429 | lpm_tree->proto = proto; | |
430 | err = mlxsw_sp_lpm_tree_alloc(mlxsw_sp, lpm_tree); | |
431 | if (err) | |
432 | return ERR_PTR(err); | |
433 | ||
434 | err = mlxsw_sp_lpm_tree_left_struct_set(mlxsw_sp, prefix_usage, | |
435 | lpm_tree); | |
436 | if (err) | |
437 | goto err_left_struct_set; | |
2083d367 JP |
438 | memcpy(&lpm_tree->prefix_usage, prefix_usage, |
439 | sizeof(lpm_tree->prefix_usage)); | |
53342023 JP |
440 | return lpm_tree; |
441 | ||
442 | err_left_struct_set: | |
443 | mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree); | |
444 | return ERR_PTR(err); | |
445 | } | |
446 | ||
447 | static int mlxsw_sp_lpm_tree_destroy(struct mlxsw_sp *mlxsw_sp, | |
448 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
449 | { | |
450 | return mlxsw_sp_lpm_tree_free(mlxsw_sp, lpm_tree); | |
451 | } | |
452 | ||
453 | static struct mlxsw_sp_lpm_tree * | |
454 | mlxsw_sp_lpm_tree_get(struct mlxsw_sp *mlxsw_sp, | |
455 | struct mlxsw_sp_prefix_usage *prefix_usage, | |
382dbb40 | 456 | enum mlxsw_sp_l3proto proto) |
53342023 JP |
457 | { |
458 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
459 | int i; | |
460 | ||
8494ab06 IS |
461 | for (i = 0; i < mlxsw_sp->router.lpm.tree_count; i++) { |
462 | lpm_tree = &mlxsw_sp->router.lpm.trees[i]; | |
8b99becd JP |
463 | if (lpm_tree->ref_count != 0 && |
464 | lpm_tree->proto == proto && | |
53342023 JP |
465 | mlxsw_sp_prefix_usage_eq(&lpm_tree->prefix_usage, |
466 | prefix_usage)) | |
467 | goto inc_ref_count; | |
468 | } | |
469 | lpm_tree = mlxsw_sp_lpm_tree_create(mlxsw_sp, prefix_usage, | |
382dbb40 | 470 | proto); |
53342023 JP |
471 | if (IS_ERR(lpm_tree)) |
472 | return lpm_tree; | |
473 | ||
474 | inc_ref_count: | |
475 | lpm_tree->ref_count++; | |
476 | return lpm_tree; | |
477 | } | |
478 | ||
479 | static int mlxsw_sp_lpm_tree_put(struct mlxsw_sp *mlxsw_sp, | |
480 | struct mlxsw_sp_lpm_tree *lpm_tree) | |
481 | { | |
482 | if (--lpm_tree->ref_count == 0) | |
483 | return mlxsw_sp_lpm_tree_destroy(mlxsw_sp, lpm_tree); | |
484 | return 0; | |
485 | } | |
486 | ||
8494ab06 IS |
487 | #define MLXSW_SP_LPM_TREE_MIN 2 /* trees 0 and 1 are reserved */ |
488 | ||
489 | static int mlxsw_sp_lpm_init(struct mlxsw_sp *mlxsw_sp) | |
53342023 JP |
490 | { |
491 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
8494ab06 | 492 | u64 max_trees; |
53342023 JP |
493 | int i; |
494 | ||
8494ab06 IS |
495 | if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_LPM_TREES)) |
496 | return -EIO; | |
497 | ||
498 | max_trees = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_LPM_TREES); | |
499 | mlxsw_sp->router.lpm.tree_count = max_trees - MLXSW_SP_LPM_TREE_MIN; | |
500 | mlxsw_sp->router.lpm.trees = kcalloc(mlxsw_sp->router.lpm.tree_count, | |
501 | sizeof(struct mlxsw_sp_lpm_tree), | |
502 | GFP_KERNEL); | |
503 | if (!mlxsw_sp->router.lpm.trees) | |
504 | return -ENOMEM; | |
505 | ||
506 | for (i = 0; i < mlxsw_sp->router.lpm.tree_count; i++) { | |
507 | lpm_tree = &mlxsw_sp->router.lpm.trees[i]; | |
53342023 JP |
508 | lpm_tree->id = i + MLXSW_SP_LPM_TREE_MIN; |
509 | } | |
8494ab06 IS |
510 | |
511 | return 0; | |
512 | } | |
513 | ||
514 | static void mlxsw_sp_lpm_fini(struct mlxsw_sp *mlxsw_sp) | |
515 | { | |
516 | kfree(mlxsw_sp->router.lpm.trees); | |
53342023 JP |
517 | } |
518 | ||
76610ebb IS |
519 | static bool mlxsw_sp_vr_is_used(const struct mlxsw_sp_vr *vr) |
520 | { | |
521 | return !!vr->fib4; | |
522 | } | |
523 | ||
6b75c480 JP |
524 | static struct mlxsw_sp_vr *mlxsw_sp_vr_find_unused(struct mlxsw_sp *mlxsw_sp) |
525 | { | |
526 | struct mlxsw_sp_vr *vr; | |
527 | int i; | |
528 | ||
c1a38311 | 529 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
6b75c480 | 530 | vr = &mlxsw_sp->router.vrs[i]; |
76610ebb | 531 | if (!mlxsw_sp_vr_is_used(vr)) |
6b75c480 JP |
532 | return vr; |
533 | } | |
534 | return NULL; | |
535 | } | |
536 | ||
537 | static int mlxsw_sp_vr_lpm_tree_bind(struct mlxsw_sp *mlxsw_sp, | |
76610ebb | 538 | const struct mlxsw_sp_fib *fib) |
6b75c480 JP |
539 | { |
540 | char raltb_pl[MLXSW_REG_RALTB_LEN]; | |
541 | ||
76610ebb IS |
542 | mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id, |
543 | (enum mlxsw_reg_ralxx_protocol) fib->proto, | |
544 | fib->lpm_tree->id); | |
6b75c480 JP |
545 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl); |
546 | } | |
547 | ||
548 | static int mlxsw_sp_vr_lpm_tree_unbind(struct mlxsw_sp *mlxsw_sp, | |
76610ebb | 549 | const struct mlxsw_sp_fib *fib) |
6b75c480 JP |
550 | { |
551 | char raltb_pl[MLXSW_REG_RALTB_LEN]; | |
552 | ||
553 | /* Bind to tree 0 which is default */ | |
76610ebb IS |
554 | mlxsw_reg_raltb_pack(raltb_pl, fib->vr->id, |
555 | (enum mlxsw_reg_ralxx_protocol) fib->proto, 0); | |
6b75c480 JP |
556 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), raltb_pl); |
557 | } | |
558 | ||
559 | static u32 mlxsw_sp_fix_tb_id(u32 tb_id) | |
560 | { | |
561 | /* For our purpose, squash main and local table into one */ | |
562 | if (tb_id == RT_TABLE_LOCAL) | |
563 | tb_id = RT_TABLE_MAIN; | |
564 | return tb_id; | |
565 | } | |
566 | ||
567 | static struct mlxsw_sp_vr *mlxsw_sp_vr_find(struct mlxsw_sp *mlxsw_sp, | |
76610ebb | 568 | u32 tb_id) |
6b75c480 JP |
569 | { |
570 | struct mlxsw_sp_vr *vr; | |
571 | int i; | |
572 | ||
573 | tb_id = mlxsw_sp_fix_tb_id(tb_id); | |
9497c042 | 574 | |
c1a38311 | 575 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
6b75c480 | 576 | vr = &mlxsw_sp->router.vrs[i]; |
76610ebb | 577 | if (mlxsw_sp_vr_is_used(vr) && vr->tb_id == tb_id) |
6b75c480 JP |
578 | return vr; |
579 | } | |
580 | return NULL; | |
581 | } | |
582 | ||
76610ebb IS |
583 | static struct mlxsw_sp_fib *mlxsw_sp_vr_fib(const struct mlxsw_sp_vr *vr, |
584 | enum mlxsw_sp_l3proto proto) | |
585 | { | |
586 | switch (proto) { | |
587 | case MLXSW_SP_L3_PROTO_IPV4: | |
588 | return vr->fib4; | |
589 | case MLXSW_SP_L3_PROTO_IPV6: | |
590 | BUG_ON(1); | |
591 | } | |
592 | return NULL; | |
593 | } | |
594 | ||
6b75c480 | 595 | static struct mlxsw_sp_vr *mlxsw_sp_vr_create(struct mlxsw_sp *mlxsw_sp, |
76610ebb | 596 | u32 tb_id) |
6b75c480 | 597 | { |
6b75c480 | 598 | struct mlxsw_sp_vr *vr; |
6b75c480 JP |
599 | |
600 | vr = mlxsw_sp_vr_find_unused(mlxsw_sp); | |
601 | if (!vr) | |
602 | return ERR_PTR(-EBUSY); | |
76610ebb IS |
603 | vr->fib4 = mlxsw_sp_fib_create(vr, MLXSW_SP_L3_PROTO_IPV4); |
604 | if (IS_ERR(vr->fib4)) | |
605 | return ERR_CAST(vr->fib4); | |
6b75c480 | 606 | vr->tb_id = tb_id; |
6b75c480 | 607 | return vr; |
6b75c480 JP |
608 | } |
609 | ||
76610ebb | 610 | static void mlxsw_sp_vr_destroy(struct mlxsw_sp_vr *vr) |
6b75c480 | 611 | { |
76610ebb IS |
612 | mlxsw_sp_fib_destroy(vr->fib4); |
613 | vr->fib4 = NULL; | |
6b75c480 JP |
614 | } |
615 | ||
616 | static int | |
76610ebb | 617 | mlxsw_sp_vr_lpm_tree_check(struct mlxsw_sp *mlxsw_sp, struct mlxsw_sp_fib *fib, |
6b75c480 JP |
618 | struct mlxsw_sp_prefix_usage *req_prefix_usage) |
619 | { | |
76610ebb | 620 | struct mlxsw_sp_lpm_tree *lpm_tree = fib->lpm_tree; |
f7df4923 IS |
621 | struct mlxsw_sp_lpm_tree *new_tree; |
622 | int err; | |
6b75c480 | 623 | |
f7df4923 | 624 | if (mlxsw_sp_prefix_usage_eq(req_prefix_usage, &lpm_tree->prefix_usage)) |
6b75c480 JP |
625 | return 0; |
626 | ||
f7df4923 | 627 | new_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, req_prefix_usage, |
76610ebb | 628 | fib->proto); |
f7df4923 | 629 | if (IS_ERR(new_tree)) { |
6b75c480 JP |
630 | /* We failed to get a tree according to the required |
631 | * prefix usage. However, the current tree might be still good | |
632 | * for us if our requirement is subset of the prefixes used | |
633 | * in the tree. | |
634 | */ | |
635 | if (mlxsw_sp_prefix_usage_subset(req_prefix_usage, | |
f7df4923 | 636 | &lpm_tree->prefix_usage)) |
6b75c480 | 637 | return 0; |
f7df4923 | 638 | return PTR_ERR(new_tree); |
6b75c480 JP |
639 | } |
640 | ||
f7df4923 | 641 | /* Prevent packet loss by overwriting existing binding */ |
76610ebb IS |
642 | fib->lpm_tree = new_tree; |
643 | err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib); | |
f7df4923 IS |
644 | if (err) |
645 | goto err_tree_bind; | |
646 | mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree); | |
647 | ||
648 | return 0; | |
649 | ||
650 | err_tree_bind: | |
76610ebb | 651 | fib->lpm_tree = lpm_tree; |
f7df4923 IS |
652 | mlxsw_sp_lpm_tree_put(mlxsw_sp, new_tree); |
653 | return err; | |
6b75c480 JP |
654 | } |
655 | ||
76610ebb | 656 | static struct mlxsw_sp_vr *mlxsw_sp_vr_get(struct mlxsw_sp *mlxsw_sp, u32 tb_id) |
6b75c480 JP |
657 | { |
658 | struct mlxsw_sp_vr *vr; | |
6b75c480 JP |
659 | |
660 | tb_id = mlxsw_sp_fix_tb_id(tb_id); | |
76610ebb IS |
661 | vr = mlxsw_sp_vr_find(mlxsw_sp, tb_id); |
662 | if (!vr) | |
663 | vr = mlxsw_sp_vr_create(mlxsw_sp, tb_id); | |
6b75c480 JP |
664 | return vr; |
665 | } | |
666 | ||
76610ebb | 667 | static void mlxsw_sp_vr_put(struct mlxsw_sp_vr *vr) |
6b75c480 | 668 | { |
6913229e | 669 | if (!vr->rif_count && list_empty(&vr->fib4->node_list)) |
76610ebb | 670 | mlxsw_sp_vr_destroy(vr); |
6b75c480 JP |
671 | } |
672 | ||
9497c042 | 673 | static int mlxsw_sp_vrs_init(struct mlxsw_sp *mlxsw_sp) |
6b75c480 JP |
674 | { |
675 | struct mlxsw_sp_vr *vr; | |
c1a38311 | 676 | u64 max_vrs; |
6b75c480 JP |
677 | int i; |
678 | ||
c1a38311 | 679 | if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_VRS)) |
9497c042 NF |
680 | return -EIO; |
681 | ||
c1a38311 JP |
682 | max_vrs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); |
683 | mlxsw_sp->router.vrs = kcalloc(max_vrs, sizeof(struct mlxsw_sp_vr), | |
9497c042 NF |
684 | GFP_KERNEL); |
685 | if (!mlxsw_sp->router.vrs) | |
686 | return -ENOMEM; | |
687 | ||
c1a38311 | 688 | for (i = 0; i < max_vrs; i++) { |
6b75c480 JP |
689 | vr = &mlxsw_sp->router.vrs[i]; |
690 | vr->id = i; | |
691 | } | |
9497c042 NF |
692 | |
693 | return 0; | |
694 | } | |
695 | ||
ac571de9 IS |
696 | static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp); |
697 | ||
9497c042 NF |
698 | static void mlxsw_sp_vrs_fini(struct mlxsw_sp *mlxsw_sp) |
699 | { | |
3057224e IS |
700 | /* At this stage we're guaranteed not to have new incoming |
701 | * FIB notifications and the work queue is free from FIBs | |
702 | * sitting on top of mlxsw netdevs. However, we can still | |
703 | * have other FIBs queued. Flush the queue before flushing | |
704 | * the device's tables. No need for locks, as we're the only | |
705 | * writer. | |
706 | */ | |
707 | mlxsw_core_flush_owq(); | |
ac571de9 | 708 | mlxsw_sp_router_fib_flush(mlxsw_sp); |
9497c042 | 709 | kfree(mlxsw_sp->router.vrs); |
6b75c480 JP |
710 | } |
711 | ||
6cf3c971 | 712 | struct mlxsw_sp_neigh_key { |
33b1341c | 713 | struct neighbour *n; |
6cf3c971 JP |
714 | }; |
715 | ||
716 | struct mlxsw_sp_neigh_entry { | |
9665b745 | 717 | struct list_head rif_list_node; |
6cf3c971 JP |
718 | struct rhash_head ht_node; |
719 | struct mlxsw_sp_neigh_key key; | |
720 | u16 rif; | |
5c8802f1 | 721 | bool connected; |
a6bf9e93 | 722 | unsigned char ha[ETH_ALEN]; |
a7ff87ac JP |
723 | struct list_head nexthop_list; /* list of nexthops using |
724 | * this neigh entry | |
725 | */ | |
b2157149 | 726 | struct list_head nexthop_neighs_list_node; |
6cf3c971 JP |
727 | }; |
728 | ||
729 | static const struct rhashtable_params mlxsw_sp_neigh_ht_params = { | |
730 | .key_offset = offsetof(struct mlxsw_sp_neigh_entry, key), | |
731 | .head_offset = offsetof(struct mlxsw_sp_neigh_entry, ht_node), | |
732 | .key_len = sizeof(struct mlxsw_sp_neigh_key), | |
733 | }; | |
734 | ||
6cf3c971 | 735 | static struct mlxsw_sp_neigh_entry * |
5c8802f1 IS |
736 | mlxsw_sp_neigh_entry_alloc(struct mlxsw_sp *mlxsw_sp, struct neighbour *n, |
737 | u16 rif) | |
6cf3c971 JP |
738 | { |
739 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
740 | ||
5c8802f1 | 741 | neigh_entry = kzalloc(sizeof(*neigh_entry), GFP_KERNEL); |
6cf3c971 JP |
742 | if (!neigh_entry) |
743 | return NULL; | |
5c8802f1 | 744 | |
33b1341c | 745 | neigh_entry->key.n = n; |
6cf3c971 | 746 | neigh_entry->rif = rif; |
a7ff87ac | 747 | INIT_LIST_HEAD(&neigh_entry->nexthop_list); |
5c8802f1 | 748 | |
6cf3c971 JP |
749 | return neigh_entry; |
750 | } | |
751 | ||
5c8802f1 | 752 | static void mlxsw_sp_neigh_entry_free(struct mlxsw_sp_neigh_entry *neigh_entry) |
6cf3c971 JP |
753 | { |
754 | kfree(neigh_entry); | |
755 | } | |
756 | ||
5c8802f1 IS |
757 | static int |
758 | mlxsw_sp_neigh_entry_insert(struct mlxsw_sp *mlxsw_sp, | |
759 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
6cf3c971 | 760 | { |
5c8802f1 IS |
761 | return rhashtable_insert_fast(&mlxsw_sp->router.neigh_ht, |
762 | &neigh_entry->ht_node, | |
763 | mlxsw_sp_neigh_ht_params); | |
764 | } | |
6cf3c971 | 765 | |
5c8802f1 IS |
766 | static void |
767 | mlxsw_sp_neigh_entry_remove(struct mlxsw_sp *mlxsw_sp, | |
768 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
769 | { | |
770 | rhashtable_remove_fast(&mlxsw_sp->router.neigh_ht, | |
771 | &neigh_entry->ht_node, | |
772 | mlxsw_sp_neigh_ht_params); | |
6cf3c971 JP |
773 | } |
774 | ||
5c8802f1 IS |
775 | static struct mlxsw_sp_neigh_entry * |
776 | mlxsw_sp_neigh_entry_create(struct mlxsw_sp *mlxsw_sp, struct neighbour *n) | |
6cf3c971 | 777 | { |
6cf3c971 | 778 | struct mlxsw_sp_neigh_entry *neigh_entry; |
bf95233e | 779 | struct mlxsw_sp_rif *rif; |
6cf3c971 JP |
780 | int err; |
781 | ||
bf95233e AS |
782 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, n->dev); |
783 | if (!rif) | |
5c8802f1 | 784 | return ERR_PTR(-EINVAL); |
6cf3c971 | 785 | |
bf95233e | 786 | neigh_entry = mlxsw_sp_neigh_entry_alloc(mlxsw_sp, n, rif->rif_index); |
6cf3c971 | 787 | if (!neigh_entry) |
5c8802f1 IS |
788 | return ERR_PTR(-ENOMEM); |
789 | ||
6cf3c971 JP |
790 | err = mlxsw_sp_neigh_entry_insert(mlxsw_sp, neigh_entry); |
791 | if (err) | |
792 | goto err_neigh_entry_insert; | |
5c8802f1 | 793 | |
bf95233e | 794 | list_add(&neigh_entry->rif_list_node, &rif->neigh_list); |
9665b745 | 795 | |
5c8802f1 | 796 | return neigh_entry; |
6cf3c971 JP |
797 | |
798 | err_neigh_entry_insert: | |
5c8802f1 IS |
799 | mlxsw_sp_neigh_entry_free(neigh_entry); |
800 | return ERR_PTR(err); | |
6cf3c971 JP |
801 | } |
802 | ||
5c8802f1 IS |
803 | static void |
804 | mlxsw_sp_neigh_entry_destroy(struct mlxsw_sp *mlxsw_sp, | |
805 | struct mlxsw_sp_neigh_entry *neigh_entry) | |
6cf3c971 | 806 | { |
9665b745 | 807 | list_del(&neigh_entry->rif_list_node); |
5c8802f1 IS |
808 | mlxsw_sp_neigh_entry_remove(mlxsw_sp, neigh_entry); |
809 | mlxsw_sp_neigh_entry_free(neigh_entry); | |
810 | } | |
6cf3c971 | 811 | |
5c8802f1 IS |
812 | static struct mlxsw_sp_neigh_entry * |
813 | mlxsw_sp_neigh_entry_lookup(struct mlxsw_sp *mlxsw_sp, struct neighbour *n) | |
814 | { | |
815 | struct mlxsw_sp_neigh_key key; | |
6cf3c971 | 816 | |
5c8802f1 IS |
817 | key.n = n; |
818 | return rhashtable_lookup_fast(&mlxsw_sp->router.neigh_ht, | |
819 | &key, mlxsw_sp_neigh_ht_params); | |
6cf3c971 JP |
820 | } |
821 | ||
c723c735 YG |
822 | static void |
823 | mlxsw_sp_router_neighs_update_interval_init(struct mlxsw_sp *mlxsw_sp) | |
824 | { | |
825 | unsigned long interval = NEIGH_VAR(&arp_tbl.parms, DELAY_PROBE_TIME); | |
826 | ||
827 | mlxsw_sp->router.neighs_update.interval = jiffies_to_msecs(interval); | |
828 | } | |
829 | ||
830 | static void mlxsw_sp_router_neigh_ent_ipv4_process(struct mlxsw_sp *mlxsw_sp, | |
831 | char *rauhtd_pl, | |
832 | int ent_index) | |
833 | { | |
834 | struct net_device *dev; | |
835 | struct neighbour *n; | |
836 | __be32 dipn; | |
837 | u32 dip; | |
838 | u16 rif; | |
839 | ||
840 | mlxsw_reg_rauhtd_ent_ipv4_unpack(rauhtd_pl, ent_index, &rif, &dip); | |
841 | ||
842 | if (!mlxsw_sp->rifs[rif]) { | |
843 | dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Incorrect RIF in neighbour entry\n"); | |
844 | return; | |
845 | } | |
846 | ||
847 | dipn = htonl(dip); | |
848 | dev = mlxsw_sp->rifs[rif]->dev; | |
849 | n = neigh_lookup(&arp_tbl, &dipn, dev); | |
850 | if (!n) { | |
851 | netdev_err(dev, "Failed to find matching neighbour for IP=%pI4h\n", | |
852 | &dip); | |
853 | return; | |
854 | } | |
855 | ||
856 | netdev_dbg(dev, "Updating neighbour with IP=%pI4h\n", &dip); | |
857 | neigh_event_send(n, NULL); | |
858 | neigh_release(n); | |
859 | } | |
860 | ||
861 | static void mlxsw_sp_router_neigh_rec_ipv4_process(struct mlxsw_sp *mlxsw_sp, | |
862 | char *rauhtd_pl, | |
863 | int rec_index) | |
864 | { | |
865 | u8 num_entries; | |
866 | int i; | |
867 | ||
868 | num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl, | |
869 | rec_index); | |
870 | /* Hardware starts counting at 0, so add 1. */ | |
871 | num_entries++; | |
872 | ||
873 | /* Each record consists of several neighbour entries. */ | |
874 | for (i = 0; i < num_entries; i++) { | |
875 | int ent_index; | |
876 | ||
877 | ent_index = rec_index * MLXSW_REG_RAUHTD_IPV4_ENT_PER_REC + i; | |
878 | mlxsw_sp_router_neigh_ent_ipv4_process(mlxsw_sp, rauhtd_pl, | |
879 | ent_index); | |
880 | } | |
881 | ||
882 | } | |
883 | ||
884 | static void mlxsw_sp_router_neigh_rec_process(struct mlxsw_sp *mlxsw_sp, | |
885 | char *rauhtd_pl, int rec_index) | |
886 | { | |
887 | switch (mlxsw_reg_rauhtd_rec_type_get(rauhtd_pl, rec_index)) { | |
888 | case MLXSW_REG_RAUHTD_TYPE_IPV4: | |
889 | mlxsw_sp_router_neigh_rec_ipv4_process(mlxsw_sp, rauhtd_pl, | |
890 | rec_index); | |
891 | break; | |
892 | case MLXSW_REG_RAUHTD_TYPE_IPV6: | |
893 | WARN_ON_ONCE(1); | |
894 | break; | |
895 | } | |
896 | } | |
897 | ||
42cdb338 AS |
898 | static bool mlxsw_sp_router_rauhtd_is_full(char *rauhtd_pl) |
899 | { | |
900 | u8 num_rec, last_rec_index, num_entries; | |
901 | ||
902 | num_rec = mlxsw_reg_rauhtd_num_rec_get(rauhtd_pl); | |
903 | last_rec_index = num_rec - 1; | |
904 | ||
905 | if (num_rec < MLXSW_REG_RAUHTD_REC_MAX_NUM) | |
906 | return false; | |
907 | if (mlxsw_reg_rauhtd_rec_type_get(rauhtd_pl, last_rec_index) == | |
908 | MLXSW_REG_RAUHTD_TYPE_IPV6) | |
909 | return true; | |
910 | ||
911 | num_entries = mlxsw_reg_rauhtd_ipv4_rec_num_entries_get(rauhtd_pl, | |
912 | last_rec_index); | |
913 | if (++num_entries == MLXSW_REG_RAUHTD_IPV4_ENT_PER_REC) | |
914 | return true; | |
915 | return false; | |
916 | } | |
917 | ||
b2157149 | 918 | static int mlxsw_sp_router_neighs_update_rauhtd(struct mlxsw_sp *mlxsw_sp) |
c723c735 | 919 | { |
c723c735 YG |
920 | char *rauhtd_pl; |
921 | u8 num_rec; | |
922 | int i, err; | |
923 | ||
924 | rauhtd_pl = kmalloc(MLXSW_REG_RAUHTD_LEN, GFP_KERNEL); | |
925 | if (!rauhtd_pl) | |
b2157149 | 926 | return -ENOMEM; |
c723c735 YG |
927 | |
928 | /* Make sure the neighbour's netdev isn't removed in the | |
929 | * process. | |
930 | */ | |
931 | rtnl_lock(); | |
932 | do { | |
933 | mlxsw_reg_rauhtd_pack(rauhtd_pl, MLXSW_REG_RAUHTD_TYPE_IPV4); | |
934 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(rauhtd), | |
935 | rauhtd_pl); | |
936 | if (err) { | |
937 | dev_err_ratelimited(mlxsw_sp->bus_info->dev, "Failed to dump neighbour talbe\n"); | |
938 | break; | |
939 | } | |
940 | num_rec = mlxsw_reg_rauhtd_num_rec_get(rauhtd_pl); | |
941 | for (i = 0; i < num_rec; i++) | |
942 | mlxsw_sp_router_neigh_rec_process(mlxsw_sp, rauhtd_pl, | |
943 | i); | |
42cdb338 | 944 | } while (mlxsw_sp_router_rauhtd_is_full(rauhtd_pl)); |
c723c735 YG |
945 | rtnl_unlock(); |
946 | ||
947 | kfree(rauhtd_pl); | |
b2157149 YG |
948 | return err; |
949 | } | |
950 | ||
951 | static void mlxsw_sp_router_neighs_update_nh(struct mlxsw_sp *mlxsw_sp) | |
952 | { | |
953 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
954 | ||
955 | /* Take RTNL mutex here to prevent lists from changes */ | |
956 | rtnl_lock(); | |
957 | list_for_each_entry(neigh_entry, &mlxsw_sp->router.nexthop_neighs_list, | |
8a0b7275 | 958 | nexthop_neighs_list_node) |
b2157149 YG |
959 | /* If this neigh have nexthops, make the kernel think this neigh |
960 | * is active regardless of the traffic. | |
961 | */ | |
8a0b7275 | 962 | neigh_event_send(neigh_entry->key.n, NULL); |
b2157149 YG |
963 | rtnl_unlock(); |
964 | } | |
965 | ||
966 | static void | |
967 | mlxsw_sp_router_neighs_update_work_schedule(struct mlxsw_sp *mlxsw_sp) | |
968 | { | |
969 | unsigned long interval = mlxsw_sp->router.neighs_update.interval; | |
970 | ||
971 | mlxsw_core_schedule_dw(&mlxsw_sp->router.neighs_update.dw, | |
972 | msecs_to_jiffies(interval)); | |
973 | } | |
974 | ||
975 | static void mlxsw_sp_router_neighs_update_work(struct work_struct *work) | |
976 | { | |
977 | struct mlxsw_sp *mlxsw_sp = container_of(work, struct mlxsw_sp, | |
978 | router.neighs_update.dw.work); | |
979 | int err; | |
980 | ||
981 | err = mlxsw_sp_router_neighs_update_rauhtd(mlxsw_sp); | |
982 | if (err) | |
983 | dev_err(mlxsw_sp->bus_info->dev, "Could not update kernel for neigh activity"); | |
984 | ||
985 | mlxsw_sp_router_neighs_update_nh(mlxsw_sp); | |
986 | ||
c723c735 YG |
987 | mlxsw_sp_router_neighs_update_work_schedule(mlxsw_sp); |
988 | } | |
989 | ||
0b2361d9 YG |
990 | static void mlxsw_sp_router_probe_unresolved_nexthops(struct work_struct *work) |
991 | { | |
992 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
993 | struct mlxsw_sp *mlxsw_sp = container_of(work, struct mlxsw_sp, | |
994 | router.nexthop_probe_dw.work); | |
995 | ||
996 | /* Iterate over nexthop neighbours, find those who are unresolved and | |
997 | * send arp on them. This solves the chicken-egg problem when | |
998 | * the nexthop wouldn't get offloaded until the neighbor is resolved | |
999 | * but it wouldn't get resolved ever in case traffic is flowing in HW | |
1000 | * using different nexthop. | |
1001 | * | |
1002 | * Take RTNL mutex here to prevent lists from changes. | |
1003 | */ | |
1004 | rtnl_lock(); | |
1005 | list_for_each_entry(neigh_entry, &mlxsw_sp->router.nexthop_neighs_list, | |
8a0b7275 | 1006 | nexthop_neighs_list_node) |
01b1aa35 | 1007 | if (!neigh_entry->connected) |
33b1341c | 1008 | neigh_event_send(neigh_entry->key.n, NULL); |
0b2361d9 YG |
1009 | rtnl_unlock(); |
1010 | ||
1011 | mlxsw_core_schedule_dw(&mlxsw_sp->router.nexthop_probe_dw, | |
1012 | MLXSW_SP_UNRESOLVED_NH_PROBE_INTERVAL); | |
1013 | } | |
1014 | ||
a7ff87ac JP |
1015 | static void |
1016 | mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp, | |
1017 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
1018 | bool removing); | |
1019 | ||
5c8802f1 IS |
1020 | static enum mlxsw_reg_rauht_op mlxsw_sp_rauht_op(bool adding) |
1021 | { | |
1022 | return adding ? MLXSW_REG_RAUHT_OP_WRITE_ADD : | |
1023 | MLXSW_REG_RAUHT_OP_WRITE_DELETE; | |
1024 | } | |
1025 | ||
1026 | static void | |
1027 | mlxsw_sp_router_neigh_entry_op4(struct mlxsw_sp *mlxsw_sp, | |
1028 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
1029 | enum mlxsw_reg_rauht_op op) | |
a6bf9e93 | 1030 | { |
33b1341c | 1031 | struct neighbour *n = neigh_entry->key.n; |
5c8802f1 | 1032 | u32 dip = ntohl(*((__be32 *) n->primary_key)); |
a6bf9e93 | 1033 | char rauht_pl[MLXSW_REG_RAUHT_LEN]; |
5c8802f1 IS |
1034 | |
1035 | mlxsw_reg_rauht_pack4(rauht_pl, op, neigh_entry->rif, neigh_entry->ha, | |
1036 | dip); | |
1037 | mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl); | |
1038 | } | |
1039 | ||
1040 | static void | |
1041 | mlxsw_sp_neigh_entry_update(struct mlxsw_sp *mlxsw_sp, | |
1042 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
1043 | bool adding) | |
1044 | { | |
1045 | if (!adding && !neigh_entry->connected) | |
1046 | return; | |
1047 | neigh_entry->connected = adding; | |
1048 | if (neigh_entry->key.n->tbl == &arp_tbl) | |
1049 | mlxsw_sp_router_neigh_entry_op4(mlxsw_sp, neigh_entry, | |
1050 | mlxsw_sp_rauht_op(adding)); | |
1051 | else | |
1052 | WARN_ON_ONCE(1); | |
1053 | } | |
1054 | ||
1055 | struct mlxsw_sp_neigh_event_work { | |
1056 | struct work_struct work; | |
1057 | struct mlxsw_sp *mlxsw_sp; | |
1058 | struct neighbour *n; | |
1059 | }; | |
1060 | ||
1061 | static void mlxsw_sp_router_neigh_event_work(struct work_struct *work) | |
1062 | { | |
1063 | struct mlxsw_sp_neigh_event_work *neigh_work = | |
1064 | container_of(work, struct mlxsw_sp_neigh_event_work, work); | |
1065 | struct mlxsw_sp *mlxsw_sp = neigh_work->mlxsw_sp; | |
1066 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
1067 | struct neighbour *n = neigh_work->n; | |
1068 | unsigned char ha[ETH_ALEN]; | |
a6bf9e93 | 1069 | bool entry_connected; |
93a87e5e | 1070 | u8 nud_state, dead; |
a6bf9e93 | 1071 | |
5c8802f1 IS |
1072 | /* If these parameters are changed after we release the lock, |
1073 | * then we are guaranteed to receive another event letting us | |
1074 | * know about it. | |
1075 | */ | |
a6bf9e93 | 1076 | read_lock_bh(&n->lock); |
5c8802f1 | 1077 | memcpy(ha, n->ha, ETH_ALEN); |
a6bf9e93 | 1078 | nud_state = n->nud_state; |
93a87e5e | 1079 | dead = n->dead; |
a6bf9e93 YG |
1080 | read_unlock_bh(&n->lock); |
1081 | ||
5c8802f1 | 1082 | rtnl_lock(); |
93a87e5e | 1083 | entry_connected = nud_state & NUD_VALID && !dead; |
5c8802f1 IS |
1084 | neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n); |
1085 | if (!entry_connected && !neigh_entry) | |
1086 | goto out; | |
1087 | if (!neigh_entry) { | |
1088 | neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n); | |
1089 | if (IS_ERR(neigh_entry)) | |
1090 | goto out; | |
a6bf9e93 YG |
1091 | } |
1092 | ||
5c8802f1 IS |
1093 | memcpy(neigh_entry->ha, ha, ETH_ALEN); |
1094 | mlxsw_sp_neigh_entry_update(mlxsw_sp, neigh_entry, entry_connected); | |
1095 | mlxsw_sp_nexthop_neigh_update(mlxsw_sp, neigh_entry, !entry_connected); | |
1096 | ||
1097 | if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list)) | |
1098 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); | |
1099 | ||
1100 | out: | |
1101 | rtnl_unlock(); | |
a6bf9e93 | 1102 | neigh_release(n); |
5c8802f1 | 1103 | kfree(neigh_work); |
a6bf9e93 YG |
1104 | } |
1105 | ||
e7322638 JP |
1106 | int mlxsw_sp_router_netevent_event(struct notifier_block *unused, |
1107 | unsigned long event, void *ptr) | |
c723c735 | 1108 | { |
5c8802f1 | 1109 | struct mlxsw_sp_neigh_event_work *neigh_work; |
c723c735 YG |
1110 | struct mlxsw_sp_port *mlxsw_sp_port; |
1111 | struct mlxsw_sp *mlxsw_sp; | |
1112 | unsigned long interval; | |
1113 | struct neigh_parms *p; | |
a6bf9e93 | 1114 | struct neighbour *n; |
c723c735 YG |
1115 | |
1116 | switch (event) { | |
1117 | case NETEVENT_DELAY_PROBE_TIME_UPDATE: | |
1118 | p = ptr; | |
1119 | ||
1120 | /* We don't care about changes in the default table. */ | |
1121 | if (!p->dev || p->tbl != &arp_tbl) | |
1122 | return NOTIFY_DONE; | |
1123 | ||
1124 | /* We are in atomic context and can't take RTNL mutex, | |
1125 | * so use RCU variant to walk the device chain. | |
1126 | */ | |
1127 | mlxsw_sp_port = mlxsw_sp_port_lower_dev_hold(p->dev); | |
1128 | if (!mlxsw_sp_port) | |
1129 | return NOTIFY_DONE; | |
1130 | ||
1131 | mlxsw_sp = mlxsw_sp_port->mlxsw_sp; | |
1132 | interval = jiffies_to_msecs(NEIGH_VAR(p, DELAY_PROBE_TIME)); | |
1133 | mlxsw_sp->router.neighs_update.interval = interval; | |
1134 | ||
1135 | mlxsw_sp_port_dev_put(mlxsw_sp_port); | |
1136 | break; | |
a6bf9e93 YG |
1137 | case NETEVENT_NEIGH_UPDATE: |
1138 | n = ptr; | |
a6bf9e93 YG |
1139 | |
1140 | if (n->tbl != &arp_tbl) | |
1141 | return NOTIFY_DONE; | |
1142 | ||
5c8802f1 | 1143 | mlxsw_sp_port = mlxsw_sp_port_lower_dev_hold(n->dev); |
a6bf9e93 YG |
1144 | if (!mlxsw_sp_port) |
1145 | return NOTIFY_DONE; | |
1146 | ||
5c8802f1 IS |
1147 | neigh_work = kzalloc(sizeof(*neigh_work), GFP_ATOMIC); |
1148 | if (!neigh_work) { | |
a6bf9e93 | 1149 | mlxsw_sp_port_dev_put(mlxsw_sp_port); |
5c8802f1 | 1150 | return NOTIFY_BAD; |
a6bf9e93 | 1151 | } |
5c8802f1 IS |
1152 | |
1153 | INIT_WORK(&neigh_work->work, mlxsw_sp_router_neigh_event_work); | |
1154 | neigh_work->mlxsw_sp = mlxsw_sp_port->mlxsw_sp; | |
1155 | neigh_work->n = n; | |
a6bf9e93 YG |
1156 | |
1157 | /* Take a reference to ensure the neighbour won't be | |
1158 | * destructed until we drop the reference in delayed | |
1159 | * work. | |
1160 | */ | |
1161 | neigh_clone(n); | |
5c8802f1 IS |
1162 | mlxsw_core_schedule_work(&neigh_work->work); |
1163 | mlxsw_sp_port_dev_put(mlxsw_sp_port); | |
a6bf9e93 | 1164 | break; |
c723c735 YG |
1165 | } |
1166 | ||
1167 | return NOTIFY_DONE; | |
1168 | } | |
1169 | ||
6cf3c971 JP |
1170 | static int mlxsw_sp_neigh_init(struct mlxsw_sp *mlxsw_sp) |
1171 | { | |
c723c735 YG |
1172 | int err; |
1173 | ||
1174 | err = rhashtable_init(&mlxsw_sp->router.neigh_ht, | |
1175 | &mlxsw_sp_neigh_ht_params); | |
1176 | if (err) | |
1177 | return err; | |
1178 | ||
1179 | /* Initialize the polling interval according to the default | |
1180 | * table. | |
1181 | */ | |
1182 | mlxsw_sp_router_neighs_update_interval_init(mlxsw_sp); | |
1183 | ||
0b2361d9 | 1184 | /* Create the delayed works for the activity_update */ |
c723c735 YG |
1185 | INIT_DELAYED_WORK(&mlxsw_sp->router.neighs_update.dw, |
1186 | mlxsw_sp_router_neighs_update_work); | |
0b2361d9 YG |
1187 | INIT_DELAYED_WORK(&mlxsw_sp->router.nexthop_probe_dw, |
1188 | mlxsw_sp_router_probe_unresolved_nexthops); | |
c723c735 | 1189 | mlxsw_core_schedule_dw(&mlxsw_sp->router.neighs_update.dw, 0); |
0b2361d9 | 1190 | mlxsw_core_schedule_dw(&mlxsw_sp->router.nexthop_probe_dw, 0); |
c723c735 | 1191 | return 0; |
6cf3c971 JP |
1192 | } |
1193 | ||
1194 | static void mlxsw_sp_neigh_fini(struct mlxsw_sp *mlxsw_sp) | |
1195 | { | |
c723c735 | 1196 | cancel_delayed_work_sync(&mlxsw_sp->router.neighs_update.dw); |
0b2361d9 | 1197 | cancel_delayed_work_sync(&mlxsw_sp->router.nexthop_probe_dw); |
6cf3c971 JP |
1198 | rhashtable_destroy(&mlxsw_sp->router.neigh_ht); |
1199 | } | |
1200 | ||
9665b745 | 1201 | static int mlxsw_sp_neigh_rif_flush(struct mlxsw_sp *mlxsw_sp, |
bf95233e | 1202 | const struct mlxsw_sp_rif *rif) |
9665b745 IS |
1203 | { |
1204 | char rauht_pl[MLXSW_REG_RAUHT_LEN]; | |
1205 | ||
1206 | mlxsw_reg_rauht_pack(rauht_pl, MLXSW_REG_RAUHT_OP_WRITE_DELETE_ALL, | |
bf95233e | 1207 | rif->rif_index, rif->addr); |
9665b745 IS |
1208 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rauht), rauht_pl); |
1209 | } | |
1210 | ||
1211 | static void mlxsw_sp_neigh_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, | |
bf95233e | 1212 | struct mlxsw_sp_rif *rif) |
9665b745 IS |
1213 | { |
1214 | struct mlxsw_sp_neigh_entry *neigh_entry, *tmp; | |
1215 | ||
bf95233e AS |
1216 | mlxsw_sp_neigh_rif_flush(mlxsw_sp, rif); |
1217 | list_for_each_entry_safe(neigh_entry, tmp, &rif->neigh_list, | |
9665b745 IS |
1218 | rif_list_node) |
1219 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); | |
1220 | } | |
1221 | ||
c53b8e1b IS |
1222 | struct mlxsw_sp_nexthop_key { |
1223 | struct fib_nh *fib_nh; | |
1224 | }; | |
1225 | ||
a7ff87ac JP |
1226 | struct mlxsw_sp_nexthop { |
1227 | struct list_head neigh_list_node; /* member of neigh entry list */ | |
9665b745 | 1228 | struct list_head rif_list_node; |
a7ff87ac JP |
1229 | struct mlxsw_sp_nexthop_group *nh_grp; /* pointer back to the group |
1230 | * this belongs to | |
1231 | */ | |
c53b8e1b IS |
1232 | struct rhash_head ht_node; |
1233 | struct mlxsw_sp_nexthop_key key; | |
bf95233e | 1234 | struct mlxsw_sp_rif *rif; |
a7ff87ac JP |
1235 | u8 should_offload:1, /* set indicates this neigh is connected and |
1236 | * should be put to KVD linear area of this group. | |
1237 | */ | |
1238 | offloaded:1, /* set in case the neigh is actually put into | |
1239 | * KVD linear area of this group. | |
1240 | */ | |
1241 | update:1; /* set indicates that MAC of this neigh should be | |
1242 | * updated in HW | |
1243 | */ | |
1244 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
1245 | }; | |
1246 | ||
e9ad5e7d IS |
1247 | struct mlxsw_sp_nexthop_group_key { |
1248 | struct fib_info *fi; | |
1249 | }; | |
1250 | ||
a7ff87ac | 1251 | struct mlxsw_sp_nexthop_group { |
e9ad5e7d | 1252 | struct rhash_head ht_node; |
a7ff87ac | 1253 | struct list_head fib_list; /* list of fib entries that use this group */ |
e9ad5e7d | 1254 | struct mlxsw_sp_nexthop_group_key key; |
b3e8d1eb IS |
1255 | u8 adj_index_valid:1, |
1256 | gateway:1; /* routes using the group use a gateway */ | |
a7ff87ac JP |
1257 | u32 adj_index; |
1258 | u16 ecmp_size; | |
1259 | u16 count; | |
1260 | struct mlxsw_sp_nexthop nexthops[0]; | |
bf95233e | 1261 | #define nh_rif nexthops[0].rif |
a7ff87ac JP |
1262 | }; |
1263 | ||
e9ad5e7d IS |
1264 | static const struct rhashtable_params mlxsw_sp_nexthop_group_ht_params = { |
1265 | .key_offset = offsetof(struct mlxsw_sp_nexthop_group, key), | |
1266 | .head_offset = offsetof(struct mlxsw_sp_nexthop_group, ht_node), | |
1267 | .key_len = sizeof(struct mlxsw_sp_nexthop_group_key), | |
1268 | }; | |
1269 | ||
1270 | static int mlxsw_sp_nexthop_group_insert(struct mlxsw_sp *mlxsw_sp, | |
1271 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1272 | { | |
1273 | return rhashtable_insert_fast(&mlxsw_sp->router.nexthop_group_ht, | |
1274 | &nh_grp->ht_node, | |
1275 | mlxsw_sp_nexthop_group_ht_params); | |
1276 | } | |
1277 | ||
1278 | static void mlxsw_sp_nexthop_group_remove(struct mlxsw_sp *mlxsw_sp, | |
1279 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1280 | { | |
1281 | rhashtable_remove_fast(&mlxsw_sp->router.nexthop_group_ht, | |
1282 | &nh_grp->ht_node, | |
1283 | mlxsw_sp_nexthop_group_ht_params); | |
1284 | } | |
1285 | ||
1286 | static struct mlxsw_sp_nexthop_group * | |
1287 | mlxsw_sp_nexthop_group_lookup(struct mlxsw_sp *mlxsw_sp, | |
1288 | struct mlxsw_sp_nexthop_group_key key) | |
1289 | { | |
1290 | return rhashtable_lookup_fast(&mlxsw_sp->router.nexthop_group_ht, &key, | |
1291 | mlxsw_sp_nexthop_group_ht_params); | |
1292 | } | |
1293 | ||
c53b8e1b IS |
1294 | static const struct rhashtable_params mlxsw_sp_nexthop_ht_params = { |
1295 | .key_offset = offsetof(struct mlxsw_sp_nexthop, key), | |
1296 | .head_offset = offsetof(struct mlxsw_sp_nexthop, ht_node), | |
1297 | .key_len = sizeof(struct mlxsw_sp_nexthop_key), | |
1298 | }; | |
1299 | ||
1300 | static int mlxsw_sp_nexthop_insert(struct mlxsw_sp *mlxsw_sp, | |
1301 | struct mlxsw_sp_nexthop *nh) | |
1302 | { | |
1303 | return rhashtable_insert_fast(&mlxsw_sp->router.nexthop_ht, | |
1304 | &nh->ht_node, mlxsw_sp_nexthop_ht_params); | |
1305 | } | |
1306 | ||
1307 | static void mlxsw_sp_nexthop_remove(struct mlxsw_sp *mlxsw_sp, | |
1308 | struct mlxsw_sp_nexthop *nh) | |
1309 | { | |
1310 | rhashtable_remove_fast(&mlxsw_sp->router.nexthop_ht, &nh->ht_node, | |
1311 | mlxsw_sp_nexthop_ht_params); | |
1312 | } | |
1313 | ||
ad178c8e IS |
1314 | static struct mlxsw_sp_nexthop * |
1315 | mlxsw_sp_nexthop_lookup(struct mlxsw_sp *mlxsw_sp, | |
1316 | struct mlxsw_sp_nexthop_key key) | |
1317 | { | |
1318 | return rhashtable_lookup_fast(&mlxsw_sp->router.nexthop_ht, &key, | |
1319 | mlxsw_sp_nexthop_ht_params); | |
1320 | } | |
1321 | ||
a7ff87ac | 1322 | static int mlxsw_sp_adj_index_mass_update_vr(struct mlxsw_sp *mlxsw_sp, |
76610ebb | 1323 | const struct mlxsw_sp_fib *fib, |
a7ff87ac JP |
1324 | u32 adj_index, u16 ecmp_size, |
1325 | u32 new_adj_index, | |
1326 | u16 new_ecmp_size) | |
1327 | { | |
1328 | char raleu_pl[MLXSW_REG_RALEU_LEN]; | |
1329 | ||
1a9234e6 | 1330 | mlxsw_reg_raleu_pack(raleu_pl, |
76610ebb IS |
1331 | (enum mlxsw_reg_ralxx_protocol) fib->proto, |
1332 | fib->vr->id, adj_index, ecmp_size, new_adj_index, | |
1a9234e6 | 1333 | new_ecmp_size); |
a7ff87ac JP |
1334 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raleu), raleu_pl); |
1335 | } | |
1336 | ||
1337 | static int mlxsw_sp_adj_index_mass_update(struct mlxsw_sp *mlxsw_sp, | |
1338 | struct mlxsw_sp_nexthop_group *nh_grp, | |
1339 | u32 old_adj_index, u16 old_ecmp_size) | |
1340 | { | |
1341 | struct mlxsw_sp_fib_entry *fib_entry; | |
76610ebb | 1342 | struct mlxsw_sp_fib *fib = NULL; |
a7ff87ac JP |
1343 | int err; |
1344 | ||
1345 | list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) { | |
76610ebb | 1346 | if (fib == fib_entry->fib_node->fib) |
a7ff87ac | 1347 | continue; |
76610ebb IS |
1348 | fib = fib_entry->fib_node->fib; |
1349 | err = mlxsw_sp_adj_index_mass_update_vr(mlxsw_sp, fib, | |
a7ff87ac JP |
1350 | old_adj_index, |
1351 | old_ecmp_size, | |
1352 | nh_grp->adj_index, | |
1353 | nh_grp->ecmp_size); | |
1354 | if (err) | |
1355 | return err; | |
1356 | } | |
1357 | return 0; | |
1358 | } | |
1359 | ||
1360 | static int mlxsw_sp_nexthop_mac_update(struct mlxsw_sp *mlxsw_sp, u32 adj_index, | |
1361 | struct mlxsw_sp_nexthop *nh) | |
1362 | { | |
1363 | struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry; | |
1364 | char ratr_pl[MLXSW_REG_RATR_LEN]; | |
1365 | ||
1366 | mlxsw_reg_ratr_pack(ratr_pl, MLXSW_REG_RATR_OP_WRITE_WRITE_ENTRY, | |
1367 | true, adj_index, neigh_entry->rif); | |
1368 | mlxsw_reg_ratr_eth_entry_pack(ratr_pl, neigh_entry->ha); | |
1369 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ratr), ratr_pl); | |
1370 | } | |
1371 | ||
1372 | static int | |
1373 | mlxsw_sp_nexthop_group_mac_update(struct mlxsw_sp *mlxsw_sp, | |
a59b7e02 IS |
1374 | struct mlxsw_sp_nexthop_group *nh_grp, |
1375 | bool reallocate) | |
a7ff87ac JP |
1376 | { |
1377 | u32 adj_index = nh_grp->adj_index; /* base */ | |
1378 | struct mlxsw_sp_nexthop *nh; | |
1379 | int i; | |
1380 | int err; | |
1381 | ||
1382 | for (i = 0; i < nh_grp->count; i++) { | |
1383 | nh = &nh_grp->nexthops[i]; | |
1384 | ||
1385 | if (!nh->should_offload) { | |
1386 | nh->offloaded = 0; | |
1387 | continue; | |
1388 | } | |
1389 | ||
a59b7e02 | 1390 | if (nh->update || reallocate) { |
a7ff87ac JP |
1391 | err = mlxsw_sp_nexthop_mac_update(mlxsw_sp, |
1392 | adj_index, nh); | |
1393 | if (err) | |
1394 | return err; | |
1395 | nh->update = 0; | |
1396 | nh->offloaded = 1; | |
1397 | } | |
1398 | adj_index++; | |
1399 | } | |
1400 | return 0; | |
1401 | } | |
1402 | ||
1403 | static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp, | |
1404 | struct mlxsw_sp_fib_entry *fib_entry); | |
1405 | ||
1406 | static int | |
1407 | mlxsw_sp_nexthop_fib_entries_update(struct mlxsw_sp *mlxsw_sp, | |
1408 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1409 | { | |
1410 | struct mlxsw_sp_fib_entry *fib_entry; | |
1411 | int err; | |
1412 | ||
1413 | list_for_each_entry(fib_entry, &nh_grp->fib_list, nexthop_group_node) { | |
1414 | err = mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); | |
1415 | if (err) | |
1416 | return err; | |
1417 | } | |
1418 | return 0; | |
1419 | } | |
1420 | ||
1421 | static void | |
1422 | mlxsw_sp_nexthop_group_refresh(struct mlxsw_sp *mlxsw_sp, | |
1423 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1424 | { | |
1425 | struct mlxsw_sp_nexthop *nh; | |
1426 | bool offload_change = false; | |
1427 | u32 adj_index; | |
1428 | u16 ecmp_size = 0; | |
1429 | bool old_adj_index_valid; | |
1430 | u32 old_adj_index; | |
1431 | u16 old_ecmp_size; | |
a7ff87ac JP |
1432 | int i; |
1433 | int err; | |
1434 | ||
b3e8d1eb IS |
1435 | if (!nh_grp->gateway) { |
1436 | mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
1437 | return; | |
1438 | } | |
1439 | ||
a7ff87ac JP |
1440 | for (i = 0; i < nh_grp->count; i++) { |
1441 | nh = &nh_grp->nexthops[i]; | |
1442 | ||
1443 | if (nh->should_offload ^ nh->offloaded) { | |
1444 | offload_change = true; | |
1445 | if (nh->should_offload) | |
1446 | nh->update = 1; | |
1447 | } | |
1448 | if (nh->should_offload) | |
1449 | ecmp_size++; | |
1450 | } | |
1451 | if (!offload_change) { | |
1452 | /* Nothing was added or removed, so no need to reallocate. Just | |
1453 | * update MAC on existing adjacency indexes. | |
1454 | */ | |
a59b7e02 IS |
1455 | err = mlxsw_sp_nexthop_group_mac_update(mlxsw_sp, nh_grp, |
1456 | false); | |
a7ff87ac JP |
1457 | if (err) { |
1458 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n"); | |
1459 | goto set_trap; | |
1460 | } | |
1461 | return; | |
1462 | } | |
1463 | if (!ecmp_size) | |
1464 | /* No neigh of this group is connected so we just set | |
1465 | * the trap and let everthing flow through kernel. | |
1466 | */ | |
1467 | goto set_trap; | |
1468 | ||
13124443 AS |
1469 | err = mlxsw_sp_kvdl_alloc(mlxsw_sp, ecmp_size, &adj_index); |
1470 | if (err) { | |
a7ff87ac JP |
1471 | /* We ran out of KVD linear space, just set the |
1472 | * trap and let everything flow through kernel. | |
1473 | */ | |
1474 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to allocate KVD linear area for nexthop group.\n"); | |
1475 | goto set_trap; | |
1476 | } | |
a7ff87ac JP |
1477 | old_adj_index_valid = nh_grp->adj_index_valid; |
1478 | old_adj_index = nh_grp->adj_index; | |
1479 | old_ecmp_size = nh_grp->ecmp_size; | |
1480 | nh_grp->adj_index_valid = 1; | |
1481 | nh_grp->adj_index = adj_index; | |
1482 | nh_grp->ecmp_size = ecmp_size; | |
a59b7e02 | 1483 | err = mlxsw_sp_nexthop_group_mac_update(mlxsw_sp, nh_grp, true); |
a7ff87ac JP |
1484 | if (err) { |
1485 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to update neigh MAC in adjacency table.\n"); | |
1486 | goto set_trap; | |
1487 | } | |
1488 | ||
1489 | if (!old_adj_index_valid) { | |
1490 | /* The trap was set for fib entries, so we have to call | |
1491 | * fib entry update to unset it and use adjacency index. | |
1492 | */ | |
1493 | err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
1494 | if (err) { | |
1495 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to add adjacency index to fib entries.\n"); | |
1496 | goto set_trap; | |
1497 | } | |
1498 | return; | |
1499 | } | |
1500 | ||
1501 | err = mlxsw_sp_adj_index_mass_update(mlxsw_sp, nh_grp, | |
1502 | old_adj_index, old_ecmp_size); | |
1503 | mlxsw_sp_kvdl_free(mlxsw_sp, old_adj_index); | |
1504 | if (err) { | |
1505 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to mass-update adjacency index for nexthop group.\n"); | |
1506 | goto set_trap; | |
1507 | } | |
1508 | return; | |
1509 | ||
1510 | set_trap: | |
1511 | old_adj_index_valid = nh_grp->adj_index_valid; | |
1512 | nh_grp->adj_index_valid = 0; | |
1513 | for (i = 0; i < nh_grp->count; i++) { | |
1514 | nh = &nh_grp->nexthops[i]; | |
1515 | nh->offloaded = 0; | |
1516 | } | |
1517 | err = mlxsw_sp_nexthop_fib_entries_update(mlxsw_sp, nh_grp); | |
1518 | if (err) | |
1519 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to set traps for fib entries.\n"); | |
1520 | if (old_adj_index_valid) | |
1521 | mlxsw_sp_kvdl_free(mlxsw_sp, nh_grp->adj_index); | |
1522 | } | |
1523 | ||
1524 | static void __mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp_nexthop *nh, | |
1525 | bool removing) | |
1526 | { | |
1527 | if (!removing && !nh->should_offload) | |
1528 | nh->should_offload = 1; | |
1529 | else if (removing && nh->offloaded) | |
1530 | nh->should_offload = 0; | |
1531 | nh->update = 1; | |
1532 | } | |
1533 | ||
1534 | static void | |
1535 | mlxsw_sp_nexthop_neigh_update(struct mlxsw_sp *mlxsw_sp, | |
1536 | struct mlxsw_sp_neigh_entry *neigh_entry, | |
1537 | bool removing) | |
1538 | { | |
1539 | struct mlxsw_sp_nexthop *nh; | |
1540 | ||
a7ff87ac JP |
1541 | list_for_each_entry(nh, &neigh_entry->nexthop_list, |
1542 | neigh_list_node) { | |
1543 | __mlxsw_sp_nexthop_neigh_update(nh, removing); | |
1544 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
1545 | } | |
a7ff87ac JP |
1546 | } |
1547 | ||
9665b745 | 1548 | static void mlxsw_sp_nexthop_rif_init(struct mlxsw_sp_nexthop *nh, |
bf95233e | 1549 | struct mlxsw_sp_rif *rif) |
9665b745 | 1550 | { |
bf95233e | 1551 | if (nh->rif) |
9665b745 IS |
1552 | return; |
1553 | ||
bf95233e AS |
1554 | nh->rif = rif; |
1555 | list_add(&nh->rif_list_node, &rif->nexthop_list); | |
9665b745 IS |
1556 | } |
1557 | ||
1558 | static void mlxsw_sp_nexthop_rif_fini(struct mlxsw_sp_nexthop *nh) | |
1559 | { | |
bf95233e | 1560 | if (!nh->rif) |
9665b745 IS |
1561 | return; |
1562 | ||
1563 | list_del(&nh->rif_list_node); | |
bf95233e | 1564 | nh->rif = NULL; |
9665b745 IS |
1565 | } |
1566 | ||
a8c97014 IS |
1567 | static int mlxsw_sp_nexthop_neigh_init(struct mlxsw_sp *mlxsw_sp, |
1568 | struct mlxsw_sp_nexthop *nh) | |
a7ff87ac JP |
1569 | { |
1570 | struct mlxsw_sp_neigh_entry *neigh_entry; | |
a8c97014 | 1571 | struct fib_nh *fib_nh = nh->key.fib_nh; |
a7ff87ac | 1572 | struct neighbour *n; |
93a87e5e | 1573 | u8 nud_state, dead; |
c53b8e1b IS |
1574 | int err; |
1575 | ||
ad178c8e | 1576 | if (!nh->nh_grp->gateway || nh->neigh_entry) |
b8399a1e IS |
1577 | return 0; |
1578 | ||
33b1341c JP |
1579 | /* Take a reference of neigh here ensuring that neigh would |
1580 | * not be detructed before the nexthop entry is finished. | |
1581 | * The reference is taken either in neigh_lookup() or | |
fd76d910 | 1582 | * in neigh_create() in case n is not found. |
33b1341c | 1583 | */ |
a8c97014 | 1584 | n = neigh_lookup(&arp_tbl, &fib_nh->nh_gw, fib_nh->nh_dev); |
33b1341c | 1585 | if (!n) { |
a8c97014 IS |
1586 | n = neigh_create(&arp_tbl, &fib_nh->nh_gw, fib_nh->nh_dev); |
1587 | if (IS_ERR(n)) | |
1588 | return PTR_ERR(n); | |
a7ff87ac | 1589 | neigh_event_send(n, NULL); |
33b1341c JP |
1590 | } |
1591 | neigh_entry = mlxsw_sp_neigh_entry_lookup(mlxsw_sp, n); | |
1592 | if (!neigh_entry) { | |
5c8802f1 IS |
1593 | neigh_entry = mlxsw_sp_neigh_entry_create(mlxsw_sp, n); |
1594 | if (IS_ERR(neigh_entry)) { | |
c53b8e1b IS |
1595 | err = -EINVAL; |
1596 | goto err_neigh_entry_create; | |
5c8802f1 | 1597 | } |
a7ff87ac | 1598 | } |
b2157149 YG |
1599 | |
1600 | /* If that is the first nexthop connected to that neigh, add to | |
1601 | * nexthop_neighs_list | |
1602 | */ | |
1603 | if (list_empty(&neigh_entry->nexthop_list)) | |
1604 | list_add_tail(&neigh_entry->nexthop_neighs_list_node, | |
1605 | &mlxsw_sp->router.nexthop_neighs_list); | |
1606 | ||
a7ff87ac JP |
1607 | nh->neigh_entry = neigh_entry; |
1608 | list_add_tail(&nh->neigh_list_node, &neigh_entry->nexthop_list); | |
1609 | read_lock_bh(&n->lock); | |
1610 | nud_state = n->nud_state; | |
93a87e5e | 1611 | dead = n->dead; |
a7ff87ac | 1612 | read_unlock_bh(&n->lock); |
93a87e5e | 1613 | __mlxsw_sp_nexthop_neigh_update(nh, !(nud_state & NUD_VALID && !dead)); |
a7ff87ac JP |
1614 | |
1615 | return 0; | |
c53b8e1b IS |
1616 | |
1617 | err_neigh_entry_create: | |
1618 | neigh_release(n); | |
c53b8e1b | 1619 | return err; |
a7ff87ac JP |
1620 | } |
1621 | ||
a8c97014 IS |
1622 | static void mlxsw_sp_nexthop_neigh_fini(struct mlxsw_sp *mlxsw_sp, |
1623 | struct mlxsw_sp_nexthop *nh) | |
a7ff87ac JP |
1624 | { |
1625 | struct mlxsw_sp_neigh_entry *neigh_entry = nh->neigh_entry; | |
a8c97014 | 1626 | struct neighbour *n; |
a7ff87ac | 1627 | |
b8399a1e | 1628 | if (!neigh_entry) |
a8c97014 IS |
1629 | return; |
1630 | n = neigh_entry->key.n; | |
b8399a1e | 1631 | |
58312125 | 1632 | __mlxsw_sp_nexthop_neigh_update(nh, true); |
a7ff87ac | 1633 | list_del(&nh->neigh_list_node); |
e58be79e | 1634 | nh->neigh_entry = NULL; |
b2157149 YG |
1635 | |
1636 | /* If that is the last nexthop connected to that neigh, remove from | |
1637 | * nexthop_neighs_list | |
1638 | */ | |
e58be79e IS |
1639 | if (list_empty(&neigh_entry->nexthop_list)) |
1640 | list_del(&neigh_entry->nexthop_neighs_list_node); | |
b2157149 | 1641 | |
5c8802f1 IS |
1642 | if (!neigh_entry->connected && list_empty(&neigh_entry->nexthop_list)) |
1643 | mlxsw_sp_neigh_entry_destroy(mlxsw_sp, neigh_entry); | |
1644 | ||
1645 | neigh_release(n); | |
a8c97014 | 1646 | } |
c53b8e1b | 1647 | |
a8c97014 IS |
1648 | static int mlxsw_sp_nexthop_init(struct mlxsw_sp *mlxsw_sp, |
1649 | struct mlxsw_sp_nexthop_group *nh_grp, | |
1650 | struct mlxsw_sp_nexthop *nh, | |
1651 | struct fib_nh *fib_nh) | |
1652 | { | |
1653 | struct net_device *dev = fib_nh->nh_dev; | |
df6dd79b | 1654 | struct in_device *in_dev; |
bf95233e | 1655 | struct mlxsw_sp_rif *rif; |
a8c97014 IS |
1656 | int err; |
1657 | ||
1658 | nh->nh_grp = nh_grp; | |
1659 | nh->key.fib_nh = fib_nh; | |
1660 | err = mlxsw_sp_nexthop_insert(mlxsw_sp, nh); | |
1661 | if (err) | |
1662 | return err; | |
1663 | ||
97989ee0 IS |
1664 | if (!dev) |
1665 | return 0; | |
1666 | ||
df6dd79b IS |
1667 | in_dev = __in_dev_get_rtnl(dev); |
1668 | if (in_dev && IN_DEV_IGNORE_ROUTES_WITH_LINKDOWN(in_dev) && | |
1669 | fib_nh->nh_flags & RTNH_F_LINKDOWN) | |
1670 | return 0; | |
1671 | ||
bf95233e AS |
1672 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); |
1673 | if (!rif) | |
a8c97014 | 1674 | return 0; |
bf95233e | 1675 | mlxsw_sp_nexthop_rif_init(nh, rif); |
a8c97014 IS |
1676 | |
1677 | err = mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh); | |
1678 | if (err) | |
1679 | goto err_nexthop_neigh_init; | |
1680 | ||
1681 | return 0; | |
1682 | ||
1683 | err_nexthop_neigh_init: | |
1684 | mlxsw_sp_nexthop_remove(mlxsw_sp, nh); | |
1685 | return err; | |
1686 | } | |
1687 | ||
1688 | static void mlxsw_sp_nexthop_fini(struct mlxsw_sp *mlxsw_sp, | |
1689 | struct mlxsw_sp_nexthop *nh) | |
1690 | { | |
1691 | mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); | |
9665b745 | 1692 | mlxsw_sp_nexthop_rif_fini(nh); |
c53b8e1b | 1693 | mlxsw_sp_nexthop_remove(mlxsw_sp, nh); |
a7ff87ac JP |
1694 | } |
1695 | ||
ad178c8e IS |
1696 | static void mlxsw_sp_nexthop_event(struct mlxsw_sp *mlxsw_sp, |
1697 | unsigned long event, struct fib_nh *fib_nh) | |
1698 | { | |
1699 | struct mlxsw_sp_nexthop_key key; | |
1700 | struct mlxsw_sp_nexthop *nh; | |
bf95233e | 1701 | struct mlxsw_sp_rif *rif; |
ad178c8e IS |
1702 | |
1703 | if (mlxsw_sp->router.aborted) | |
1704 | return; | |
1705 | ||
1706 | key.fib_nh = fib_nh; | |
1707 | nh = mlxsw_sp_nexthop_lookup(mlxsw_sp, key); | |
1708 | if (WARN_ON_ONCE(!nh)) | |
1709 | return; | |
1710 | ||
bf95233e AS |
1711 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, fib_nh->nh_dev); |
1712 | if (!rif) | |
ad178c8e IS |
1713 | return; |
1714 | ||
1715 | switch (event) { | |
1716 | case FIB_EVENT_NH_ADD: | |
bf95233e | 1717 | mlxsw_sp_nexthop_rif_init(nh, rif); |
ad178c8e IS |
1718 | mlxsw_sp_nexthop_neigh_init(mlxsw_sp, nh); |
1719 | break; | |
1720 | case FIB_EVENT_NH_DEL: | |
1721 | mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); | |
9665b745 | 1722 | mlxsw_sp_nexthop_rif_fini(nh); |
ad178c8e IS |
1723 | break; |
1724 | } | |
1725 | ||
1726 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
1727 | } | |
1728 | ||
9665b745 | 1729 | static void mlxsw_sp_nexthop_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, |
bf95233e | 1730 | struct mlxsw_sp_rif *rif) |
9665b745 IS |
1731 | { |
1732 | struct mlxsw_sp_nexthop *nh, *tmp; | |
1733 | ||
bf95233e | 1734 | list_for_each_entry_safe(nh, tmp, &rif->nexthop_list, rif_list_node) { |
9665b745 IS |
1735 | mlxsw_sp_nexthop_neigh_fini(mlxsw_sp, nh); |
1736 | mlxsw_sp_nexthop_rif_fini(nh); | |
1737 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh->nh_grp); | |
1738 | } | |
1739 | } | |
1740 | ||
a7ff87ac JP |
1741 | static struct mlxsw_sp_nexthop_group * |
1742 | mlxsw_sp_nexthop_group_create(struct mlxsw_sp *mlxsw_sp, struct fib_info *fi) | |
1743 | { | |
1744 | struct mlxsw_sp_nexthop_group *nh_grp; | |
1745 | struct mlxsw_sp_nexthop *nh; | |
1746 | struct fib_nh *fib_nh; | |
1747 | size_t alloc_size; | |
1748 | int i; | |
1749 | int err; | |
1750 | ||
1751 | alloc_size = sizeof(*nh_grp) + | |
1752 | fi->fib_nhs * sizeof(struct mlxsw_sp_nexthop); | |
1753 | nh_grp = kzalloc(alloc_size, GFP_KERNEL); | |
1754 | if (!nh_grp) | |
1755 | return ERR_PTR(-ENOMEM); | |
1756 | INIT_LIST_HEAD(&nh_grp->fib_list); | |
b3e8d1eb | 1757 | nh_grp->gateway = fi->fib_nh->nh_scope == RT_SCOPE_LINK; |
a7ff87ac | 1758 | nh_grp->count = fi->fib_nhs; |
e9ad5e7d | 1759 | nh_grp->key.fi = fi; |
a7ff87ac JP |
1760 | for (i = 0; i < nh_grp->count; i++) { |
1761 | nh = &nh_grp->nexthops[i]; | |
1762 | fib_nh = &fi->fib_nh[i]; | |
1763 | err = mlxsw_sp_nexthop_init(mlxsw_sp, nh_grp, nh, fib_nh); | |
1764 | if (err) | |
1765 | goto err_nexthop_init; | |
1766 | } | |
e9ad5e7d IS |
1767 | err = mlxsw_sp_nexthop_group_insert(mlxsw_sp, nh_grp); |
1768 | if (err) | |
1769 | goto err_nexthop_group_insert; | |
a7ff87ac JP |
1770 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); |
1771 | return nh_grp; | |
1772 | ||
e9ad5e7d | 1773 | err_nexthop_group_insert: |
a7ff87ac | 1774 | err_nexthop_init: |
df6dd79b IS |
1775 | for (i--; i >= 0; i--) { |
1776 | nh = &nh_grp->nexthops[i]; | |
a7ff87ac | 1777 | mlxsw_sp_nexthop_fini(mlxsw_sp, nh); |
df6dd79b | 1778 | } |
a7ff87ac JP |
1779 | kfree(nh_grp); |
1780 | return ERR_PTR(err); | |
1781 | } | |
1782 | ||
1783 | static void | |
1784 | mlxsw_sp_nexthop_group_destroy(struct mlxsw_sp *mlxsw_sp, | |
1785 | struct mlxsw_sp_nexthop_group *nh_grp) | |
1786 | { | |
1787 | struct mlxsw_sp_nexthop *nh; | |
1788 | int i; | |
1789 | ||
e9ad5e7d | 1790 | mlxsw_sp_nexthop_group_remove(mlxsw_sp, nh_grp); |
a7ff87ac JP |
1791 | for (i = 0; i < nh_grp->count; i++) { |
1792 | nh = &nh_grp->nexthops[i]; | |
1793 | mlxsw_sp_nexthop_fini(mlxsw_sp, nh); | |
1794 | } | |
58312125 IS |
1795 | mlxsw_sp_nexthop_group_refresh(mlxsw_sp, nh_grp); |
1796 | WARN_ON_ONCE(nh_grp->adj_index_valid); | |
a7ff87ac JP |
1797 | kfree(nh_grp); |
1798 | } | |
1799 | ||
a7ff87ac JP |
1800 | static int mlxsw_sp_nexthop_group_get(struct mlxsw_sp *mlxsw_sp, |
1801 | struct mlxsw_sp_fib_entry *fib_entry, | |
1802 | struct fib_info *fi) | |
1803 | { | |
e9ad5e7d | 1804 | struct mlxsw_sp_nexthop_group_key key; |
a7ff87ac JP |
1805 | struct mlxsw_sp_nexthop_group *nh_grp; |
1806 | ||
e9ad5e7d IS |
1807 | key.fi = fi; |
1808 | nh_grp = mlxsw_sp_nexthop_group_lookup(mlxsw_sp, key); | |
a7ff87ac JP |
1809 | if (!nh_grp) { |
1810 | nh_grp = mlxsw_sp_nexthop_group_create(mlxsw_sp, fi); | |
1811 | if (IS_ERR(nh_grp)) | |
1812 | return PTR_ERR(nh_grp); | |
1813 | } | |
1814 | list_add_tail(&fib_entry->nexthop_group_node, &nh_grp->fib_list); | |
1815 | fib_entry->nh_group = nh_grp; | |
1816 | return 0; | |
1817 | } | |
1818 | ||
1819 | static void mlxsw_sp_nexthop_group_put(struct mlxsw_sp *mlxsw_sp, | |
1820 | struct mlxsw_sp_fib_entry *fib_entry) | |
1821 | { | |
1822 | struct mlxsw_sp_nexthop_group *nh_grp = fib_entry->nh_group; | |
1823 | ||
1824 | list_del(&fib_entry->nexthop_group_node); | |
1825 | if (!list_empty(&nh_grp->fib_list)) | |
1826 | return; | |
1827 | mlxsw_sp_nexthop_group_destroy(mlxsw_sp, nh_grp); | |
1828 | } | |
1829 | ||
013b20f9 IS |
1830 | static bool |
1831 | mlxsw_sp_fib_entry_should_offload(const struct mlxsw_sp_fib_entry *fib_entry) | |
1832 | { | |
1833 | struct mlxsw_sp_nexthop_group *nh_group = fib_entry->nh_group; | |
1834 | ||
9aecce1c IS |
1835 | if (fib_entry->params.tos) |
1836 | return false; | |
1837 | ||
013b20f9 IS |
1838 | switch (fib_entry->type) { |
1839 | case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE: | |
1840 | return !!nh_group->adj_index_valid; | |
1841 | case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL: | |
70ad3506 | 1842 | return !!nh_group->nh_rif; |
013b20f9 IS |
1843 | default: |
1844 | return false; | |
1845 | } | |
1846 | } | |
1847 | ||
1848 | static void mlxsw_sp_fib_entry_offload_set(struct mlxsw_sp_fib_entry *fib_entry) | |
1849 | { | |
1850 | fib_entry->offloaded = true; | |
1851 | ||
76610ebb | 1852 | switch (fib_entry->fib_node->fib->proto) { |
013b20f9 IS |
1853 | case MLXSW_SP_L3_PROTO_IPV4: |
1854 | fib_info_offload_inc(fib_entry->nh_group->key.fi); | |
1855 | break; | |
1856 | case MLXSW_SP_L3_PROTO_IPV6: | |
1857 | WARN_ON_ONCE(1); | |
1858 | } | |
1859 | } | |
1860 | ||
1861 | static void | |
1862 | mlxsw_sp_fib_entry_offload_unset(struct mlxsw_sp_fib_entry *fib_entry) | |
1863 | { | |
76610ebb | 1864 | switch (fib_entry->fib_node->fib->proto) { |
013b20f9 IS |
1865 | case MLXSW_SP_L3_PROTO_IPV4: |
1866 | fib_info_offload_dec(fib_entry->nh_group->key.fi); | |
1867 | break; | |
1868 | case MLXSW_SP_L3_PROTO_IPV6: | |
1869 | WARN_ON_ONCE(1); | |
1870 | } | |
1871 | ||
1872 | fib_entry->offloaded = false; | |
1873 | } | |
1874 | ||
1875 | static void | |
1876 | mlxsw_sp_fib_entry_offload_refresh(struct mlxsw_sp_fib_entry *fib_entry, | |
1877 | enum mlxsw_reg_ralue_op op, int err) | |
1878 | { | |
1879 | switch (op) { | |
1880 | case MLXSW_REG_RALUE_OP_WRITE_DELETE: | |
1881 | if (!fib_entry->offloaded) | |
1882 | return; | |
1883 | return mlxsw_sp_fib_entry_offload_unset(fib_entry); | |
1884 | case MLXSW_REG_RALUE_OP_WRITE_WRITE: | |
1885 | if (err) | |
1886 | return; | |
1887 | if (mlxsw_sp_fib_entry_should_offload(fib_entry) && | |
1888 | !fib_entry->offloaded) | |
1889 | mlxsw_sp_fib_entry_offload_set(fib_entry); | |
1890 | else if (!mlxsw_sp_fib_entry_should_offload(fib_entry) && | |
1891 | fib_entry->offloaded) | |
1892 | mlxsw_sp_fib_entry_offload_unset(fib_entry); | |
1893 | return; | |
1894 | default: | |
1895 | return; | |
1896 | } | |
1897 | } | |
1898 | ||
a7ff87ac JP |
1899 | static int mlxsw_sp_fib_entry_op4_remote(struct mlxsw_sp *mlxsw_sp, |
1900 | struct mlxsw_sp_fib_entry *fib_entry, | |
1901 | enum mlxsw_reg_ralue_op op) | |
1902 | { | |
1903 | char ralue_pl[MLXSW_REG_RALUE_LEN]; | |
76610ebb | 1904 | struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib; |
9aecce1c | 1905 | u32 *p_dip = (u32 *) fib_entry->fib_node->key.addr; |
a7ff87ac JP |
1906 | enum mlxsw_reg_ralue_trap_action trap_action; |
1907 | u16 trap_id = 0; | |
1908 | u32 adjacency_index = 0; | |
1909 | u16 ecmp_size = 0; | |
1910 | ||
1911 | /* In case the nexthop group adjacency index is valid, use it | |
1912 | * with provided ECMP size. Otherwise, setup trap and pass | |
1913 | * traffic to kernel. | |
1914 | */ | |
4b411477 | 1915 | if (mlxsw_sp_fib_entry_should_offload(fib_entry)) { |
a7ff87ac JP |
1916 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP; |
1917 | adjacency_index = fib_entry->nh_group->adj_index; | |
1918 | ecmp_size = fib_entry->nh_group->ecmp_size; | |
1919 | } else { | |
1920 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP; | |
1921 | trap_id = MLXSW_TRAP_ID_RTR_INGRESS0; | |
1922 | } | |
1923 | ||
1a9234e6 | 1924 | mlxsw_reg_ralue_pack4(ralue_pl, |
76610ebb IS |
1925 | (enum mlxsw_reg_ralxx_protocol) fib->proto, op, |
1926 | fib->vr->id, fib_entry->fib_node->key.prefix_len, | |
9aecce1c | 1927 | *p_dip); |
a7ff87ac JP |
1928 | mlxsw_reg_ralue_act_remote_pack(ralue_pl, trap_action, trap_id, |
1929 | adjacency_index, ecmp_size); | |
1930 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); | |
1931 | } | |
1932 | ||
61c503f9 JP |
1933 | static int mlxsw_sp_fib_entry_op4_local(struct mlxsw_sp *mlxsw_sp, |
1934 | struct mlxsw_sp_fib_entry *fib_entry, | |
1935 | enum mlxsw_reg_ralue_op op) | |
1936 | { | |
bf95233e | 1937 | struct mlxsw_sp_rif *rif = fib_entry->nh_group->nh_rif; |
76610ebb | 1938 | struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib; |
70ad3506 | 1939 | enum mlxsw_reg_ralue_trap_action trap_action; |
61c503f9 | 1940 | char ralue_pl[MLXSW_REG_RALUE_LEN]; |
9aecce1c | 1941 | u32 *p_dip = (u32 *) fib_entry->fib_node->key.addr; |
70ad3506 | 1942 | u16 trap_id = 0; |
bf95233e | 1943 | u16 rif_index = 0; |
70ad3506 IS |
1944 | |
1945 | if (mlxsw_sp_fib_entry_should_offload(fib_entry)) { | |
1946 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_NOP; | |
bf95233e | 1947 | rif_index = rif->rif_index; |
70ad3506 IS |
1948 | } else { |
1949 | trap_action = MLXSW_REG_RALUE_TRAP_ACTION_TRAP; | |
1950 | trap_id = MLXSW_TRAP_ID_RTR_INGRESS0; | |
1951 | } | |
61c503f9 | 1952 | |
1a9234e6 | 1953 | mlxsw_reg_ralue_pack4(ralue_pl, |
76610ebb IS |
1954 | (enum mlxsw_reg_ralxx_protocol) fib->proto, op, |
1955 | fib->vr->id, fib_entry->fib_node->key.prefix_len, | |
9aecce1c | 1956 | *p_dip); |
bf95233e AS |
1957 | mlxsw_reg_ralue_act_local_pack(ralue_pl, trap_action, trap_id, |
1958 | rif_index); | |
61c503f9 JP |
1959 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); |
1960 | } | |
1961 | ||
1962 | static int mlxsw_sp_fib_entry_op4_trap(struct mlxsw_sp *mlxsw_sp, | |
1963 | struct mlxsw_sp_fib_entry *fib_entry, | |
1964 | enum mlxsw_reg_ralue_op op) | |
1965 | { | |
76610ebb | 1966 | struct mlxsw_sp_fib *fib = fib_entry->fib_node->fib; |
61c503f9 | 1967 | char ralue_pl[MLXSW_REG_RALUE_LEN]; |
9aecce1c | 1968 | u32 *p_dip = (u32 *) fib_entry->fib_node->key.addr; |
61c503f9 | 1969 | |
1a9234e6 | 1970 | mlxsw_reg_ralue_pack4(ralue_pl, |
76610ebb IS |
1971 | (enum mlxsw_reg_ralxx_protocol) fib->proto, op, |
1972 | fib->vr->id, fib_entry->fib_node->key.prefix_len, | |
9aecce1c | 1973 | *p_dip); |
61c503f9 JP |
1974 | mlxsw_reg_ralue_act_ip2me_pack(ralue_pl); |
1975 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), ralue_pl); | |
1976 | } | |
1977 | ||
1978 | static int mlxsw_sp_fib_entry_op4(struct mlxsw_sp *mlxsw_sp, | |
1979 | struct mlxsw_sp_fib_entry *fib_entry, | |
1980 | enum mlxsw_reg_ralue_op op) | |
1981 | { | |
1982 | switch (fib_entry->type) { | |
1983 | case MLXSW_SP_FIB_ENTRY_TYPE_REMOTE: | |
a7ff87ac | 1984 | return mlxsw_sp_fib_entry_op4_remote(mlxsw_sp, fib_entry, op); |
61c503f9 JP |
1985 | case MLXSW_SP_FIB_ENTRY_TYPE_LOCAL: |
1986 | return mlxsw_sp_fib_entry_op4_local(mlxsw_sp, fib_entry, op); | |
1987 | case MLXSW_SP_FIB_ENTRY_TYPE_TRAP: | |
1988 | return mlxsw_sp_fib_entry_op4_trap(mlxsw_sp, fib_entry, op); | |
1989 | } | |
1990 | return -EINVAL; | |
1991 | } | |
1992 | ||
1993 | static int mlxsw_sp_fib_entry_op(struct mlxsw_sp *mlxsw_sp, | |
1994 | struct mlxsw_sp_fib_entry *fib_entry, | |
1995 | enum mlxsw_reg_ralue_op op) | |
1996 | { | |
013b20f9 IS |
1997 | int err = -EINVAL; |
1998 | ||
76610ebb | 1999 | switch (fib_entry->fib_node->fib->proto) { |
61c503f9 | 2000 | case MLXSW_SP_L3_PROTO_IPV4: |
013b20f9 IS |
2001 | err = mlxsw_sp_fib_entry_op4(mlxsw_sp, fib_entry, op); |
2002 | break; | |
61c503f9 | 2003 | case MLXSW_SP_L3_PROTO_IPV6: |
013b20f9 | 2004 | return err; |
61c503f9 | 2005 | } |
013b20f9 IS |
2006 | mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, err); |
2007 | return err; | |
61c503f9 JP |
2008 | } |
2009 | ||
2010 | static int mlxsw_sp_fib_entry_update(struct mlxsw_sp *mlxsw_sp, | |
2011 | struct mlxsw_sp_fib_entry *fib_entry) | |
2012 | { | |
7146da31 JP |
2013 | return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, |
2014 | MLXSW_REG_RALUE_OP_WRITE_WRITE); | |
61c503f9 JP |
2015 | } |
2016 | ||
2017 | static int mlxsw_sp_fib_entry_del(struct mlxsw_sp *mlxsw_sp, | |
2018 | struct mlxsw_sp_fib_entry *fib_entry) | |
2019 | { | |
2020 | return mlxsw_sp_fib_entry_op(mlxsw_sp, fib_entry, | |
2021 | MLXSW_REG_RALUE_OP_WRITE_DELETE); | |
2022 | } | |
2023 | ||
61c503f9 | 2024 | static int |
013b20f9 IS |
2025 | mlxsw_sp_fib4_entry_type_set(struct mlxsw_sp *mlxsw_sp, |
2026 | const struct fib_entry_notifier_info *fen_info, | |
2027 | struct mlxsw_sp_fib_entry *fib_entry) | |
61c503f9 | 2028 | { |
b45f64d1 | 2029 | struct fib_info *fi = fen_info->fi; |
61c503f9 | 2030 | |
97989ee0 IS |
2031 | switch (fen_info->type) { |
2032 | case RTN_BROADCAST: /* fall through */ | |
2033 | case RTN_LOCAL: | |
61c503f9 JP |
2034 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_TRAP; |
2035 | return 0; | |
97989ee0 IS |
2036 | case RTN_UNREACHABLE: /* fall through */ |
2037 | case RTN_BLACKHOLE: /* fall through */ | |
2038 | case RTN_PROHIBIT: | |
2039 | /* Packets hitting these routes need to be trapped, but | |
2040 | * can do so with a lower priority than packets directed | |
2041 | * at the host, so use action type local instead of trap. | |
2042 | */ | |
61c503f9 | 2043 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; |
97989ee0 IS |
2044 | return 0; |
2045 | case RTN_UNICAST: | |
2046 | if (fi->fib_nh->nh_scope != RT_SCOPE_LINK) | |
2047 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_LOCAL; | |
2048 | else | |
2049 | fib_entry->type = MLXSW_SP_FIB_ENTRY_TYPE_REMOTE; | |
2050 | return 0; | |
2051 | default: | |
2052 | return -EINVAL; | |
2053 | } | |
a7ff87ac JP |
2054 | } |
2055 | ||
5b004412 | 2056 | static struct mlxsw_sp_fib_entry * |
9aecce1c IS |
2057 | mlxsw_sp_fib4_entry_create(struct mlxsw_sp *mlxsw_sp, |
2058 | struct mlxsw_sp_fib_node *fib_node, | |
2059 | const struct fib_entry_notifier_info *fen_info) | |
61c503f9 | 2060 | { |
61c503f9 | 2061 | struct mlxsw_sp_fib_entry *fib_entry; |
61c503f9 JP |
2062 | int err; |
2063 | ||
9aecce1c | 2064 | fib_entry = kzalloc(sizeof(*fib_entry), GFP_KERNEL); |
61c503f9 JP |
2065 | if (!fib_entry) { |
2066 | err = -ENOMEM; | |
9aecce1c | 2067 | goto err_fib_entry_alloc; |
61c503f9 | 2068 | } |
61c503f9 | 2069 | |
013b20f9 | 2070 | err = mlxsw_sp_fib4_entry_type_set(mlxsw_sp, fen_info, fib_entry); |
61c503f9 | 2071 | if (err) |
013b20f9 | 2072 | goto err_fib4_entry_type_set; |
61c503f9 | 2073 | |
9aecce1c | 2074 | err = mlxsw_sp_nexthop_group_get(mlxsw_sp, fib_entry, fen_info->fi); |
b8399a1e IS |
2075 | if (err) |
2076 | goto err_nexthop_group_get; | |
2077 | ||
9aecce1c IS |
2078 | fib_entry->params.prio = fen_info->fi->fib_priority; |
2079 | fib_entry->params.tb_id = fen_info->tb_id; | |
2080 | fib_entry->params.type = fen_info->type; | |
2081 | fib_entry->params.tos = fen_info->tos; | |
2082 | ||
2083 | fib_entry->fib_node = fib_node; | |
2084 | ||
5b004412 JP |
2085 | return fib_entry; |
2086 | ||
b8399a1e | 2087 | err_nexthop_group_get: |
013b20f9 | 2088 | err_fib4_entry_type_set: |
9aecce1c IS |
2089 | kfree(fib_entry); |
2090 | err_fib_entry_alloc: | |
5b004412 JP |
2091 | return ERR_PTR(err); |
2092 | } | |
2093 | ||
9aecce1c IS |
2094 | static void mlxsw_sp_fib4_entry_destroy(struct mlxsw_sp *mlxsw_sp, |
2095 | struct mlxsw_sp_fib_entry *fib_entry) | |
2096 | { | |
2097 | mlxsw_sp_nexthop_group_put(mlxsw_sp, fib_entry); | |
2098 | kfree(fib_entry); | |
2099 | } | |
2100 | ||
2101 | static struct mlxsw_sp_fib_node * | |
2102 | mlxsw_sp_fib4_node_get(struct mlxsw_sp *mlxsw_sp, | |
2103 | const struct fib_entry_notifier_info *fen_info); | |
2104 | ||
5b004412 | 2105 | static struct mlxsw_sp_fib_entry * |
9aecce1c IS |
2106 | mlxsw_sp_fib4_entry_lookup(struct mlxsw_sp *mlxsw_sp, |
2107 | const struct fib_entry_notifier_info *fen_info) | |
5b004412 | 2108 | { |
9aecce1c IS |
2109 | struct mlxsw_sp_fib_entry *fib_entry; |
2110 | struct mlxsw_sp_fib_node *fib_node; | |
5b004412 | 2111 | |
9aecce1c IS |
2112 | fib_node = mlxsw_sp_fib4_node_get(mlxsw_sp, fen_info); |
2113 | if (IS_ERR(fib_node)) | |
2114 | return NULL; | |
2115 | ||
2116 | list_for_each_entry(fib_entry, &fib_node->entry_list, list) { | |
2117 | if (fib_entry->params.tb_id == fen_info->tb_id && | |
2118 | fib_entry->params.tos == fen_info->tos && | |
2119 | fib_entry->params.type == fen_info->type && | |
2120 | fib_entry->nh_group->key.fi == fen_info->fi) { | |
2121 | return fib_entry; | |
2122 | } | |
2123 | } | |
2124 | ||
2125 | return NULL; | |
2126 | } | |
2127 | ||
2128 | static const struct rhashtable_params mlxsw_sp_fib_ht_params = { | |
2129 | .key_offset = offsetof(struct mlxsw_sp_fib_node, key), | |
2130 | .head_offset = offsetof(struct mlxsw_sp_fib_node, ht_node), | |
2131 | .key_len = sizeof(struct mlxsw_sp_fib_key), | |
2132 | .automatic_shrinking = true, | |
2133 | }; | |
2134 | ||
2135 | static int mlxsw_sp_fib_node_insert(struct mlxsw_sp_fib *fib, | |
2136 | struct mlxsw_sp_fib_node *fib_node) | |
2137 | { | |
2138 | return rhashtable_insert_fast(&fib->ht, &fib_node->ht_node, | |
2139 | mlxsw_sp_fib_ht_params); | |
2140 | } | |
2141 | ||
2142 | static void mlxsw_sp_fib_node_remove(struct mlxsw_sp_fib *fib, | |
2143 | struct mlxsw_sp_fib_node *fib_node) | |
2144 | { | |
2145 | rhashtable_remove_fast(&fib->ht, &fib_node->ht_node, | |
2146 | mlxsw_sp_fib_ht_params); | |
2147 | } | |
2148 | ||
2149 | static struct mlxsw_sp_fib_node * | |
2150 | mlxsw_sp_fib_node_lookup(struct mlxsw_sp_fib *fib, const void *addr, | |
2151 | size_t addr_len, unsigned char prefix_len) | |
2152 | { | |
2153 | struct mlxsw_sp_fib_key key; | |
2154 | ||
2155 | memset(&key, 0, sizeof(key)); | |
2156 | memcpy(key.addr, addr, addr_len); | |
2157 | key.prefix_len = prefix_len; | |
2158 | return rhashtable_lookup_fast(&fib->ht, &key, mlxsw_sp_fib_ht_params); | |
2159 | } | |
2160 | ||
2161 | static struct mlxsw_sp_fib_node * | |
76610ebb | 2162 | mlxsw_sp_fib_node_create(struct mlxsw_sp_fib *fib, const void *addr, |
9aecce1c IS |
2163 | size_t addr_len, unsigned char prefix_len) |
2164 | { | |
2165 | struct mlxsw_sp_fib_node *fib_node; | |
2166 | ||
2167 | fib_node = kzalloc(sizeof(*fib_node), GFP_KERNEL); | |
2168 | if (!fib_node) | |
5b004412 JP |
2169 | return NULL; |
2170 | ||
9aecce1c | 2171 | INIT_LIST_HEAD(&fib_node->entry_list); |
76610ebb | 2172 | list_add(&fib_node->list, &fib->node_list); |
9aecce1c IS |
2173 | memcpy(fib_node->key.addr, addr, addr_len); |
2174 | fib_node->key.prefix_len = prefix_len; | |
9aecce1c IS |
2175 | |
2176 | return fib_node; | |
2177 | } | |
2178 | ||
2179 | static void mlxsw_sp_fib_node_destroy(struct mlxsw_sp_fib_node *fib_node) | |
2180 | { | |
9aecce1c IS |
2181 | list_del(&fib_node->list); |
2182 | WARN_ON(!list_empty(&fib_node->entry_list)); | |
2183 | kfree(fib_node); | |
2184 | } | |
2185 | ||
2186 | static bool | |
2187 | mlxsw_sp_fib_node_entry_is_first(const struct mlxsw_sp_fib_node *fib_node, | |
2188 | const struct mlxsw_sp_fib_entry *fib_entry) | |
2189 | { | |
2190 | return list_first_entry(&fib_node->entry_list, | |
2191 | struct mlxsw_sp_fib_entry, list) == fib_entry; | |
2192 | } | |
2193 | ||
2194 | static void mlxsw_sp_fib_node_prefix_inc(struct mlxsw_sp_fib_node *fib_node) | |
2195 | { | |
2196 | unsigned char prefix_len = fib_node->key.prefix_len; | |
76610ebb | 2197 | struct mlxsw_sp_fib *fib = fib_node->fib; |
9aecce1c IS |
2198 | |
2199 | if (fib->prefix_ref_count[prefix_len]++ == 0) | |
2200 | mlxsw_sp_prefix_usage_set(&fib->prefix_usage, prefix_len); | |
2201 | } | |
2202 | ||
2203 | static void mlxsw_sp_fib_node_prefix_dec(struct mlxsw_sp_fib_node *fib_node) | |
2204 | { | |
2205 | unsigned char prefix_len = fib_node->key.prefix_len; | |
76610ebb | 2206 | struct mlxsw_sp_fib *fib = fib_node->fib; |
9aecce1c IS |
2207 | |
2208 | if (--fib->prefix_ref_count[prefix_len] == 0) | |
2209 | mlxsw_sp_prefix_usage_clear(&fib->prefix_usage, prefix_len); | |
5b004412 JP |
2210 | } |
2211 | ||
76610ebb IS |
2212 | static int mlxsw_sp_fib_node_init(struct mlxsw_sp *mlxsw_sp, |
2213 | struct mlxsw_sp_fib_node *fib_node, | |
2214 | struct mlxsw_sp_fib *fib) | |
2215 | { | |
2216 | struct mlxsw_sp_prefix_usage req_prefix_usage; | |
2217 | struct mlxsw_sp_lpm_tree *lpm_tree; | |
2218 | int err; | |
2219 | ||
2220 | err = mlxsw_sp_fib_node_insert(fib, fib_node); | |
2221 | if (err) | |
2222 | return err; | |
2223 | fib_node->fib = fib; | |
2224 | ||
2225 | mlxsw_sp_prefix_usage_cpy(&req_prefix_usage, &fib->prefix_usage); | |
2226 | mlxsw_sp_prefix_usage_set(&req_prefix_usage, fib_node->key.prefix_len); | |
2227 | ||
2228 | if (!mlxsw_sp_prefix_usage_none(&fib->prefix_usage)) { | |
2229 | err = mlxsw_sp_vr_lpm_tree_check(mlxsw_sp, fib, | |
2230 | &req_prefix_usage); | |
2231 | if (err) | |
2232 | goto err_tree_check; | |
2233 | } else { | |
2234 | lpm_tree = mlxsw_sp_lpm_tree_get(mlxsw_sp, &req_prefix_usage, | |
2235 | fib->proto); | |
2236 | if (IS_ERR(lpm_tree)) | |
2237 | return PTR_ERR(lpm_tree); | |
2238 | fib->lpm_tree = lpm_tree; | |
2239 | err = mlxsw_sp_vr_lpm_tree_bind(mlxsw_sp, fib); | |
2240 | if (err) | |
2241 | goto err_tree_bind; | |
2242 | } | |
2243 | ||
2244 | mlxsw_sp_fib_node_prefix_inc(fib_node); | |
2245 | ||
2246 | return 0; | |
2247 | ||
2248 | err_tree_bind: | |
2249 | fib->lpm_tree = NULL; | |
2250 | mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree); | |
2251 | err_tree_check: | |
2252 | fib_node->fib = NULL; | |
2253 | mlxsw_sp_fib_node_remove(fib, fib_node); | |
2254 | return err; | |
2255 | } | |
2256 | ||
2257 | static void mlxsw_sp_fib_node_fini(struct mlxsw_sp *mlxsw_sp, | |
2258 | struct mlxsw_sp_fib_node *fib_node) | |
2259 | { | |
2260 | struct mlxsw_sp_lpm_tree *lpm_tree = fib_node->fib->lpm_tree; | |
2261 | struct mlxsw_sp_fib *fib = fib_node->fib; | |
2262 | ||
2263 | mlxsw_sp_fib_node_prefix_dec(fib_node); | |
2264 | ||
2265 | if (mlxsw_sp_prefix_usage_none(&fib->prefix_usage)) { | |
2266 | mlxsw_sp_vr_lpm_tree_unbind(mlxsw_sp, fib); | |
2267 | fib->lpm_tree = NULL; | |
2268 | mlxsw_sp_lpm_tree_put(mlxsw_sp, lpm_tree); | |
2269 | } else { | |
2270 | mlxsw_sp_vr_lpm_tree_check(mlxsw_sp, fib, &fib->prefix_usage); | |
2271 | } | |
2272 | ||
2273 | fib_node->fib = NULL; | |
2274 | mlxsw_sp_fib_node_remove(fib, fib_node); | |
2275 | } | |
2276 | ||
9aecce1c IS |
2277 | static struct mlxsw_sp_fib_node * |
2278 | mlxsw_sp_fib4_node_get(struct mlxsw_sp *mlxsw_sp, | |
2279 | const struct fib_entry_notifier_info *fen_info) | |
5b004412 | 2280 | { |
9aecce1c | 2281 | struct mlxsw_sp_fib_node *fib_node; |
76610ebb | 2282 | struct mlxsw_sp_fib *fib; |
9aecce1c IS |
2283 | struct mlxsw_sp_vr *vr; |
2284 | int err; | |
2285 | ||
76610ebb | 2286 | vr = mlxsw_sp_vr_get(mlxsw_sp, fen_info->tb_id); |
9aecce1c IS |
2287 | if (IS_ERR(vr)) |
2288 | return ERR_CAST(vr); | |
76610ebb | 2289 | fib = mlxsw_sp_vr_fib(vr, MLXSW_SP_L3_PROTO_IPV4); |
9aecce1c | 2290 | |
76610ebb | 2291 | fib_node = mlxsw_sp_fib_node_lookup(fib, &fen_info->dst, |
9aecce1c IS |
2292 | sizeof(fen_info->dst), |
2293 | fen_info->dst_len); | |
2294 | if (fib_node) | |
2295 | return fib_node; | |
5b004412 | 2296 | |
76610ebb | 2297 | fib_node = mlxsw_sp_fib_node_create(fib, &fen_info->dst, |
9aecce1c IS |
2298 | sizeof(fen_info->dst), |
2299 | fen_info->dst_len); | |
2300 | if (!fib_node) { | |
2301 | err = -ENOMEM; | |
2302 | goto err_fib_node_create; | |
5b004412 | 2303 | } |
9aecce1c | 2304 | |
76610ebb IS |
2305 | err = mlxsw_sp_fib_node_init(mlxsw_sp, fib_node, fib); |
2306 | if (err) | |
2307 | goto err_fib_node_init; | |
2308 | ||
9aecce1c IS |
2309 | return fib_node; |
2310 | ||
76610ebb IS |
2311 | err_fib_node_init: |
2312 | mlxsw_sp_fib_node_destroy(fib_node); | |
9aecce1c | 2313 | err_fib_node_create: |
76610ebb | 2314 | mlxsw_sp_vr_put(vr); |
9aecce1c | 2315 | return ERR_PTR(err); |
5b004412 JP |
2316 | } |
2317 | ||
9aecce1c IS |
2318 | static void mlxsw_sp_fib4_node_put(struct mlxsw_sp *mlxsw_sp, |
2319 | struct mlxsw_sp_fib_node *fib_node) | |
5b004412 | 2320 | { |
76610ebb | 2321 | struct mlxsw_sp_vr *vr = fib_node->fib->vr; |
5b004412 | 2322 | |
9aecce1c IS |
2323 | if (!list_empty(&fib_node->entry_list)) |
2324 | return; | |
76610ebb | 2325 | mlxsw_sp_fib_node_fini(mlxsw_sp, fib_node); |
9aecce1c | 2326 | mlxsw_sp_fib_node_destroy(fib_node); |
76610ebb | 2327 | mlxsw_sp_vr_put(vr); |
61c503f9 JP |
2328 | } |
2329 | ||
9aecce1c IS |
2330 | static struct mlxsw_sp_fib_entry * |
2331 | mlxsw_sp_fib4_node_entry_find(const struct mlxsw_sp_fib_node *fib_node, | |
2332 | const struct mlxsw_sp_fib_entry_params *params) | |
61c503f9 | 2333 | { |
61c503f9 | 2334 | struct mlxsw_sp_fib_entry *fib_entry; |
9aecce1c IS |
2335 | |
2336 | list_for_each_entry(fib_entry, &fib_node->entry_list, list) { | |
2337 | if (fib_entry->params.tb_id > params->tb_id) | |
2338 | continue; | |
2339 | if (fib_entry->params.tb_id != params->tb_id) | |
2340 | break; | |
2341 | if (fib_entry->params.tos > params->tos) | |
2342 | continue; | |
2343 | if (fib_entry->params.prio >= params->prio || | |
2344 | fib_entry->params.tos < params->tos) | |
2345 | return fib_entry; | |
2346 | } | |
2347 | ||
2348 | return NULL; | |
2349 | } | |
2350 | ||
4283bce5 IS |
2351 | static int mlxsw_sp_fib4_node_list_append(struct mlxsw_sp_fib_entry *fib_entry, |
2352 | struct mlxsw_sp_fib_entry *new_entry) | |
2353 | { | |
2354 | struct mlxsw_sp_fib_node *fib_node; | |
2355 | ||
2356 | if (WARN_ON(!fib_entry)) | |
2357 | return -EINVAL; | |
2358 | ||
2359 | fib_node = fib_entry->fib_node; | |
2360 | list_for_each_entry_from(fib_entry, &fib_node->entry_list, list) { | |
2361 | if (fib_entry->params.tb_id != new_entry->params.tb_id || | |
2362 | fib_entry->params.tos != new_entry->params.tos || | |
2363 | fib_entry->params.prio != new_entry->params.prio) | |
2364 | break; | |
2365 | } | |
2366 | ||
2367 | list_add_tail(&new_entry->list, &fib_entry->list); | |
2368 | return 0; | |
2369 | } | |
2370 | ||
9aecce1c IS |
2371 | static int |
2372 | mlxsw_sp_fib4_node_list_insert(struct mlxsw_sp_fib_node *fib_node, | |
4283bce5 | 2373 | struct mlxsw_sp_fib_entry *new_entry, |
599cf8f9 | 2374 | bool replace, bool append) |
9aecce1c IS |
2375 | { |
2376 | struct mlxsw_sp_fib_entry *fib_entry; | |
2377 | ||
2378 | fib_entry = mlxsw_sp_fib4_node_entry_find(fib_node, &new_entry->params); | |
2379 | ||
4283bce5 IS |
2380 | if (append) |
2381 | return mlxsw_sp_fib4_node_list_append(fib_entry, new_entry); | |
599cf8f9 IS |
2382 | if (replace && WARN_ON(!fib_entry)) |
2383 | return -EINVAL; | |
4283bce5 | 2384 | |
599cf8f9 IS |
2385 | /* Insert new entry before replaced one, so that we can later |
2386 | * remove the second. | |
2387 | */ | |
9aecce1c IS |
2388 | if (fib_entry) { |
2389 | list_add_tail(&new_entry->list, &fib_entry->list); | |
2390 | } else { | |
2391 | struct mlxsw_sp_fib_entry *last; | |
2392 | ||
2393 | list_for_each_entry(last, &fib_node->entry_list, list) { | |
2394 | if (new_entry->params.tb_id > last->params.tb_id) | |
2395 | break; | |
2396 | fib_entry = last; | |
2397 | } | |
2398 | ||
2399 | if (fib_entry) | |
2400 | list_add(&new_entry->list, &fib_entry->list); | |
2401 | else | |
2402 | list_add(&new_entry->list, &fib_node->entry_list); | |
2403 | } | |
2404 | ||
2405 | return 0; | |
2406 | } | |
2407 | ||
2408 | static void | |
2409 | mlxsw_sp_fib4_node_list_remove(struct mlxsw_sp_fib_entry *fib_entry) | |
2410 | { | |
2411 | list_del(&fib_entry->list); | |
2412 | } | |
2413 | ||
2414 | static int | |
2415 | mlxsw_sp_fib4_node_entry_add(struct mlxsw_sp *mlxsw_sp, | |
2416 | const struct mlxsw_sp_fib_node *fib_node, | |
2417 | struct mlxsw_sp_fib_entry *fib_entry) | |
2418 | { | |
2419 | if (!mlxsw_sp_fib_node_entry_is_first(fib_node, fib_entry)) | |
2420 | return 0; | |
2421 | ||
2422 | /* To prevent packet loss, overwrite the previously offloaded | |
2423 | * entry. | |
2424 | */ | |
2425 | if (!list_is_singular(&fib_node->entry_list)) { | |
2426 | enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_DELETE; | |
2427 | struct mlxsw_sp_fib_entry *n = list_next_entry(fib_entry, list); | |
2428 | ||
2429 | mlxsw_sp_fib_entry_offload_refresh(n, op, 0); | |
2430 | } | |
2431 | ||
2432 | return mlxsw_sp_fib_entry_update(mlxsw_sp, fib_entry); | |
2433 | } | |
2434 | ||
2435 | static void | |
2436 | mlxsw_sp_fib4_node_entry_del(struct mlxsw_sp *mlxsw_sp, | |
2437 | const struct mlxsw_sp_fib_node *fib_node, | |
2438 | struct mlxsw_sp_fib_entry *fib_entry) | |
2439 | { | |
2440 | if (!mlxsw_sp_fib_node_entry_is_first(fib_node, fib_entry)) | |
2441 | return; | |
2442 | ||
2443 | /* Promote the next entry by overwriting the deleted entry */ | |
2444 | if (!list_is_singular(&fib_node->entry_list)) { | |
2445 | struct mlxsw_sp_fib_entry *n = list_next_entry(fib_entry, list); | |
2446 | enum mlxsw_reg_ralue_op op = MLXSW_REG_RALUE_OP_WRITE_DELETE; | |
2447 | ||
2448 | mlxsw_sp_fib_entry_update(mlxsw_sp, n); | |
2449 | mlxsw_sp_fib_entry_offload_refresh(fib_entry, op, 0); | |
2450 | return; | |
2451 | } | |
2452 | ||
2453 | mlxsw_sp_fib_entry_del(mlxsw_sp, fib_entry); | |
2454 | } | |
2455 | ||
2456 | static int mlxsw_sp_fib4_node_entry_link(struct mlxsw_sp *mlxsw_sp, | |
4283bce5 | 2457 | struct mlxsw_sp_fib_entry *fib_entry, |
599cf8f9 | 2458 | bool replace, bool append) |
9aecce1c IS |
2459 | { |
2460 | struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; | |
2461 | int err; | |
2462 | ||
599cf8f9 IS |
2463 | err = mlxsw_sp_fib4_node_list_insert(fib_node, fib_entry, replace, |
2464 | append); | |
9aecce1c IS |
2465 | if (err) |
2466 | return err; | |
2467 | ||
2468 | err = mlxsw_sp_fib4_node_entry_add(mlxsw_sp, fib_node, fib_entry); | |
2469 | if (err) | |
2470 | goto err_fib4_node_entry_add; | |
2471 | ||
9aecce1c IS |
2472 | return 0; |
2473 | ||
2474 | err_fib4_node_entry_add: | |
2475 | mlxsw_sp_fib4_node_list_remove(fib_entry); | |
2476 | return err; | |
2477 | } | |
2478 | ||
2479 | static void | |
2480 | mlxsw_sp_fib4_node_entry_unlink(struct mlxsw_sp *mlxsw_sp, | |
2481 | struct mlxsw_sp_fib_entry *fib_entry) | |
2482 | { | |
2483 | struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; | |
2484 | ||
9aecce1c IS |
2485 | mlxsw_sp_fib4_node_entry_del(mlxsw_sp, fib_node, fib_entry); |
2486 | mlxsw_sp_fib4_node_list_remove(fib_entry); | |
2487 | } | |
2488 | ||
599cf8f9 IS |
2489 | static void mlxsw_sp_fib4_entry_replace(struct mlxsw_sp *mlxsw_sp, |
2490 | struct mlxsw_sp_fib_entry *fib_entry, | |
2491 | bool replace) | |
2492 | { | |
2493 | struct mlxsw_sp_fib_node *fib_node = fib_entry->fib_node; | |
2494 | struct mlxsw_sp_fib_entry *replaced; | |
2495 | ||
2496 | if (!replace) | |
2497 | return; | |
2498 | ||
2499 | /* We inserted the new entry before replaced one */ | |
2500 | replaced = list_next_entry(fib_entry, list); | |
2501 | ||
2502 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, replaced); | |
2503 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, replaced); | |
2504 | mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node); | |
2505 | } | |
2506 | ||
9aecce1c IS |
2507 | static int |
2508 | mlxsw_sp_router_fib4_add(struct mlxsw_sp *mlxsw_sp, | |
4283bce5 | 2509 | const struct fib_entry_notifier_info *fen_info, |
599cf8f9 | 2510 | bool replace, bool append) |
9aecce1c IS |
2511 | { |
2512 | struct mlxsw_sp_fib_entry *fib_entry; | |
2513 | struct mlxsw_sp_fib_node *fib_node; | |
61c503f9 JP |
2514 | int err; |
2515 | ||
b45f64d1 JP |
2516 | if (mlxsw_sp->router.aborted) |
2517 | return 0; | |
2518 | ||
9aecce1c IS |
2519 | fib_node = mlxsw_sp_fib4_node_get(mlxsw_sp, fen_info); |
2520 | if (IS_ERR(fib_node)) { | |
2521 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to get FIB node\n"); | |
2522 | return PTR_ERR(fib_node); | |
b45f64d1 | 2523 | } |
61c503f9 | 2524 | |
9aecce1c IS |
2525 | fib_entry = mlxsw_sp_fib4_entry_create(mlxsw_sp, fib_node, fen_info); |
2526 | if (IS_ERR(fib_entry)) { | |
2527 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to create FIB entry\n"); | |
2528 | err = PTR_ERR(fib_entry); | |
2529 | goto err_fib4_entry_create; | |
2530 | } | |
5b004412 | 2531 | |
599cf8f9 IS |
2532 | err = mlxsw_sp_fib4_node_entry_link(mlxsw_sp, fib_entry, replace, |
2533 | append); | |
b45f64d1 | 2534 | if (err) { |
9aecce1c IS |
2535 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to link FIB entry to node\n"); |
2536 | goto err_fib4_node_entry_link; | |
b45f64d1 | 2537 | } |
9aecce1c | 2538 | |
599cf8f9 IS |
2539 | mlxsw_sp_fib4_entry_replace(mlxsw_sp, fib_entry, replace); |
2540 | ||
61c503f9 JP |
2541 | return 0; |
2542 | ||
9aecce1c IS |
2543 | err_fib4_node_entry_link: |
2544 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib_entry); | |
2545 | err_fib4_entry_create: | |
2546 | mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node); | |
61c503f9 JP |
2547 | return err; |
2548 | } | |
2549 | ||
37956d78 JP |
2550 | static void mlxsw_sp_router_fib4_del(struct mlxsw_sp *mlxsw_sp, |
2551 | struct fib_entry_notifier_info *fen_info) | |
61c503f9 | 2552 | { |
61c503f9 | 2553 | struct mlxsw_sp_fib_entry *fib_entry; |
9aecce1c | 2554 | struct mlxsw_sp_fib_node *fib_node; |
61c503f9 | 2555 | |
b45f64d1 | 2556 | if (mlxsw_sp->router.aborted) |
37956d78 | 2557 | return; |
b45f64d1 | 2558 | |
9aecce1c IS |
2559 | fib_entry = mlxsw_sp_fib4_entry_lookup(mlxsw_sp, fen_info); |
2560 | if (WARN_ON(!fib_entry)) | |
37956d78 | 2561 | return; |
9aecce1c | 2562 | fib_node = fib_entry->fib_node; |
5b004412 | 2563 | |
9aecce1c IS |
2564 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, fib_entry); |
2565 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib_entry); | |
2566 | mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node); | |
61c503f9 | 2567 | } |
b45f64d1 JP |
2568 | |
2569 | static int mlxsw_sp_router_set_abort_trap(struct mlxsw_sp *mlxsw_sp) | |
2570 | { | |
2571 | char ralta_pl[MLXSW_REG_RALTA_LEN]; | |
2572 | char ralst_pl[MLXSW_REG_RALST_LEN]; | |
b5d90e6d | 2573 | int i, err; |
b45f64d1 JP |
2574 | |
2575 | mlxsw_reg_ralta_pack(ralta_pl, true, MLXSW_REG_RALXX_PROTOCOL_IPV4, | |
2576 | MLXSW_SP_LPM_TREE_MIN); | |
2577 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralta), ralta_pl); | |
2578 | if (err) | |
2579 | return err; | |
2580 | ||
2581 | mlxsw_reg_ralst_pack(ralst_pl, 0xff, MLXSW_SP_LPM_TREE_MIN); | |
2582 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralst), ralst_pl); | |
2583 | if (err) | |
2584 | return err; | |
2585 | ||
b5d90e6d IS |
2586 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
2587 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router.vrs[i]; | |
2588 | char raltb_pl[MLXSW_REG_RALTB_LEN]; | |
2589 | char ralue_pl[MLXSW_REG_RALUE_LEN]; | |
b45f64d1 | 2590 | |
b5d90e6d IS |
2591 | if (!mlxsw_sp_vr_is_used(vr)) |
2592 | continue; | |
2593 | ||
2594 | mlxsw_reg_raltb_pack(raltb_pl, vr->id, | |
2595 | MLXSW_REG_RALXX_PROTOCOL_IPV4, | |
2596 | MLXSW_SP_LPM_TREE_MIN); | |
2597 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(raltb), | |
2598 | raltb_pl); | |
2599 | if (err) | |
2600 | return err; | |
2601 | ||
2602 | mlxsw_reg_ralue_pack4(ralue_pl, MLXSW_SP_L3_PROTO_IPV4, | |
2603 | MLXSW_REG_RALUE_OP_WRITE_WRITE, vr->id, 0, | |
2604 | 0); | |
2605 | mlxsw_reg_ralue_act_ip2me_pack(ralue_pl); | |
2606 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ralue), | |
2607 | ralue_pl); | |
2608 | if (err) | |
2609 | return err; | |
2610 | } | |
2611 | ||
2612 | return 0; | |
b45f64d1 JP |
2613 | } |
2614 | ||
9aecce1c IS |
2615 | static void mlxsw_sp_fib4_node_flush(struct mlxsw_sp *mlxsw_sp, |
2616 | struct mlxsw_sp_fib_node *fib_node) | |
2617 | { | |
2618 | struct mlxsw_sp_fib_entry *fib_entry, *tmp; | |
2619 | ||
2620 | list_for_each_entry_safe(fib_entry, tmp, &fib_node->entry_list, list) { | |
2621 | bool do_break = &tmp->list == &fib_node->entry_list; | |
2622 | ||
2623 | mlxsw_sp_fib4_node_entry_unlink(mlxsw_sp, fib_entry); | |
2624 | mlxsw_sp_fib4_entry_destroy(mlxsw_sp, fib_entry); | |
2625 | mlxsw_sp_fib4_node_put(mlxsw_sp, fib_node); | |
2626 | /* Break when entry list is empty and node was freed. | |
2627 | * Otherwise, we'll access freed memory in the next | |
2628 | * iteration. | |
2629 | */ | |
2630 | if (do_break) | |
2631 | break; | |
2632 | } | |
2633 | } | |
2634 | ||
2635 | static void mlxsw_sp_fib_node_flush(struct mlxsw_sp *mlxsw_sp, | |
2636 | struct mlxsw_sp_fib_node *fib_node) | |
2637 | { | |
76610ebb | 2638 | switch (fib_node->fib->proto) { |
9aecce1c IS |
2639 | case MLXSW_SP_L3_PROTO_IPV4: |
2640 | mlxsw_sp_fib4_node_flush(mlxsw_sp, fib_node); | |
2641 | break; | |
2642 | case MLXSW_SP_L3_PROTO_IPV6: | |
2643 | WARN_ON_ONCE(1); | |
2644 | break; | |
2645 | } | |
2646 | } | |
2647 | ||
76610ebb IS |
2648 | static void mlxsw_sp_vr_fib_flush(struct mlxsw_sp *mlxsw_sp, |
2649 | struct mlxsw_sp_vr *vr, | |
2650 | enum mlxsw_sp_l3proto proto) | |
b45f64d1 | 2651 | { |
76610ebb | 2652 | struct mlxsw_sp_fib *fib = mlxsw_sp_vr_fib(vr, proto); |
9aecce1c | 2653 | struct mlxsw_sp_fib_node *fib_node, *tmp; |
76610ebb IS |
2654 | |
2655 | list_for_each_entry_safe(fib_node, tmp, &fib->node_list, list) { | |
2656 | bool do_break = &tmp->list == &fib->node_list; | |
2657 | ||
2658 | mlxsw_sp_fib_node_flush(mlxsw_sp, fib_node); | |
2659 | if (do_break) | |
2660 | break; | |
2661 | } | |
2662 | } | |
2663 | ||
2664 | static void mlxsw_sp_router_fib_flush(struct mlxsw_sp *mlxsw_sp) | |
2665 | { | |
b45f64d1 | 2666 | int i; |
b45f64d1 | 2667 | |
c1a38311 | 2668 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_VRS); i++) { |
76610ebb | 2669 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router.vrs[i]; |
ac571de9 | 2670 | |
76610ebb | 2671 | if (!mlxsw_sp_vr_is_used(vr)) |
b45f64d1 | 2672 | continue; |
76610ebb | 2673 | mlxsw_sp_vr_fib_flush(mlxsw_sp, vr, MLXSW_SP_L3_PROTO_IPV4); |
b45f64d1 | 2674 | } |
ac571de9 IS |
2675 | } |
2676 | ||
2677 | static void mlxsw_sp_router_fib4_abort(struct mlxsw_sp *mlxsw_sp) | |
2678 | { | |
2679 | int err; | |
2680 | ||
d331d303 IS |
2681 | if (mlxsw_sp->router.aborted) |
2682 | return; | |
2683 | dev_warn(mlxsw_sp->bus_info->dev, "FIB abort triggered. Note that FIB entries are no longer being offloaded to this device.\n"); | |
ac571de9 | 2684 | mlxsw_sp_router_fib_flush(mlxsw_sp); |
b45f64d1 JP |
2685 | mlxsw_sp->router.aborted = true; |
2686 | err = mlxsw_sp_router_set_abort_trap(mlxsw_sp); | |
2687 | if (err) | |
2688 | dev_warn(mlxsw_sp->bus_info->dev, "Failed to set abort trap.\n"); | |
2689 | } | |
2690 | ||
3057224e | 2691 | struct mlxsw_sp_fib_event_work { |
a0e4761d | 2692 | struct work_struct work; |
ad178c8e IS |
2693 | union { |
2694 | struct fib_entry_notifier_info fen_info; | |
5d7bfd14 | 2695 | struct fib_rule_notifier_info fr_info; |
ad178c8e IS |
2696 | struct fib_nh_notifier_info fnh_info; |
2697 | }; | |
3057224e IS |
2698 | struct mlxsw_sp *mlxsw_sp; |
2699 | unsigned long event; | |
2700 | }; | |
2701 | ||
2702 | static void mlxsw_sp_router_fib_event_work(struct work_struct *work) | |
b45f64d1 | 2703 | { |
3057224e | 2704 | struct mlxsw_sp_fib_event_work *fib_work = |
a0e4761d | 2705 | container_of(work, struct mlxsw_sp_fib_event_work, work); |
3057224e | 2706 | struct mlxsw_sp *mlxsw_sp = fib_work->mlxsw_sp; |
5d7bfd14 | 2707 | struct fib_rule *rule; |
599cf8f9 | 2708 | bool replace, append; |
b45f64d1 JP |
2709 | int err; |
2710 | ||
3057224e IS |
2711 | /* Protect internal structures from changes */ |
2712 | rtnl_lock(); | |
2713 | switch (fib_work->event) { | |
599cf8f9 | 2714 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ |
4283bce5 | 2715 | case FIB_EVENT_ENTRY_APPEND: /* fall through */ |
b45f64d1 | 2716 | case FIB_EVENT_ENTRY_ADD: |
599cf8f9 | 2717 | replace = fib_work->event == FIB_EVENT_ENTRY_REPLACE; |
4283bce5 IS |
2718 | append = fib_work->event == FIB_EVENT_ENTRY_APPEND; |
2719 | err = mlxsw_sp_router_fib4_add(mlxsw_sp, &fib_work->fen_info, | |
599cf8f9 | 2720 | replace, append); |
b45f64d1 JP |
2721 | if (err) |
2722 | mlxsw_sp_router_fib4_abort(mlxsw_sp); | |
3057224e | 2723 | fib_info_put(fib_work->fen_info.fi); |
b45f64d1 JP |
2724 | break; |
2725 | case FIB_EVENT_ENTRY_DEL: | |
3057224e IS |
2726 | mlxsw_sp_router_fib4_del(mlxsw_sp, &fib_work->fen_info); |
2727 | fib_info_put(fib_work->fen_info.fi); | |
b45f64d1 JP |
2728 | break; |
2729 | case FIB_EVENT_RULE_ADD: /* fall through */ | |
2730 | case FIB_EVENT_RULE_DEL: | |
5d7bfd14 | 2731 | rule = fib_work->fr_info.rule; |
c7f6e665 | 2732 | if (!fib4_rule_default(rule) && !rule->l3mdev) |
5d7bfd14 IS |
2733 | mlxsw_sp_router_fib4_abort(mlxsw_sp); |
2734 | fib_rule_put(rule); | |
b45f64d1 | 2735 | break; |
ad178c8e IS |
2736 | case FIB_EVENT_NH_ADD: /* fall through */ |
2737 | case FIB_EVENT_NH_DEL: | |
2738 | mlxsw_sp_nexthop_event(mlxsw_sp, fib_work->event, | |
2739 | fib_work->fnh_info.fib_nh); | |
2740 | fib_info_put(fib_work->fnh_info.fib_nh->nh_parent); | |
2741 | break; | |
b45f64d1 | 2742 | } |
3057224e IS |
2743 | rtnl_unlock(); |
2744 | kfree(fib_work); | |
2745 | } | |
2746 | ||
2747 | /* Called with rcu_read_lock() */ | |
2748 | static int mlxsw_sp_router_fib_event(struct notifier_block *nb, | |
2749 | unsigned long event, void *ptr) | |
2750 | { | |
2751 | struct mlxsw_sp *mlxsw_sp = container_of(nb, struct mlxsw_sp, fib_nb); | |
2752 | struct mlxsw_sp_fib_event_work *fib_work; | |
2753 | struct fib_notifier_info *info = ptr; | |
2754 | ||
2755 | if (!net_eq(info->net, &init_net)) | |
2756 | return NOTIFY_DONE; | |
2757 | ||
2758 | fib_work = kzalloc(sizeof(*fib_work), GFP_ATOMIC); | |
2759 | if (WARN_ON(!fib_work)) | |
2760 | return NOTIFY_BAD; | |
2761 | ||
a0e4761d | 2762 | INIT_WORK(&fib_work->work, mlxsw_sp_router_fib_event_work); |
3057224e IS |
2763 | fib_work->mlxsw_sp = mlxsw_sp; |
2764 | fib_work->event = event; | |
2765 | ||
2766 | switch (event) { | |
599cf8f9 | 2767 | case FIB_EVENT_ENTRY_REPLACE: /* fall through */ |
4283bce5 | 2768 | case FIB_EVENT_ENTRY_APPEND: /* fall through */ |
3057224e IS |
2769 | case FIB_EVENT_ENTRY_ADD: /* fall through */ |
2770 | case FIB_EVENT_ENTRY_DEL: | |
2771 | memcpy(&fib_work->fen_info, ptr, sizeof(fib_work->fen_info)); | |
2772 | /* Take referece on fib_info to prevent it from being | |
2773 | * freed while work is queued. Release it afterwards. | |
2774 | */ | |
2775 | fib_info_hold(fib_work->fen_info.fi); | |
2776 | break; | |
5d7bfd14 IS |
2777 | case FIB_EVENT_RULE_ADD: /* fall through */ |
2778 | case FIB_EVENT_RULE_DEL: | |
2779 | memcpy(&fib_work->fr_info, ptr, sizeof(fib_work->fr_info)); | |
2780 | fib_rule_get(fib_work->fr_info.rule); | |
2781 | break; | |
ad178c8e IS |
2782 | case FIB_EVENT_NH_ADD: /* fall through */ |
2783 | case FIB_EVENT_NH_DEL: | |
2784 | memcpy(&fib_work->fnh_info, ptr, sizeof(fib_work->fnh_info)); | |
2785 | fib_info_hold(fib_work->fnh_info.fib_nh->nh_parent); | |
2786 | break; | |
3057224e IS |
2787 | } |
2788 | ||
a0e4761d | 2789 | mlxsw_core_schedule_work(&fib_work->work); |
3057224e | 2790 | |
b45f64d1 JP |
2791 | return NOTIFY_DONE; |
2792 | } | |
2793 | ||
4724ba56 IS |
2794 | static struct mlxsw_sp_rif * |
2795 | mlxsw_sp_rif_find_by_dev(const struct mlxsw_sp *mlxsw_sp, | |
2796 | const struct net_device *dev) | |
2797 | { | |
2798 | int i; | |
2799 | ||
2800 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) | |
2801 | if (mlxsw_sp->rifs[i] && mlxsw_sp->rifs[i]->dev == dev) | |
2802 | return mlxsw_sp->rifs[i]; | |
2803 | ||
2804 | return NULL; | |
2805 | } | |
2806 | ||
2807 | static int mlxsw_sp_router_rif_disable(struct mlxsw_sp *mlxsw_sp, u16 rif) | |
2808 | { | |
2809 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
2810 | int err; | |
2811 | ||
2812 | mlxsw_reg_ritr_rif_pack(ritr_pl, rif); | |
2813 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
2814 | if (WARN_ON_ONCE(err)) | |
2815 | return err; | |
2816 | ||
2817 | mlxsw_reg_ritr_enable_set(ritr_pl, false); | |
2818 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
2819 | } | |
2820 | ||
2821 | static void mlxsw_sp_router_rif_gone_sync(struct mlxsw_sp *mlxsw_sp, | |
bf95233e | 2822 | struct mlxsw_sp_rif *rif) |
4724ba56 | 2823 | { |
bf95233e AS |
2824 | mlxsw_sp_router_rif_disable(mlxsw_sp, rif->rif_index); |
2825 | mlxsw_sp_nexthop_rif_gone_sync(mlxsw_sp, rif); | |
2826 | mlxsw_sp_neigh_rif_gone_sync(mlxsw_sp, rif); | |
4724ba56 IS |
2827 | } |
2828 | ||
bf95233e | 2829 | static bool mlxsw_sp_rif_should_config(struct mlxsw_sp_rif *rif, |
4724ba56 IS |
2830 | const struct in_device *in_dev, |
2831 | unsigned long event) | |
2832 | { | |
2833 | switch (event) { | |
2834 | case NETDEV_UP: | |
bf95233e | 2835 | if (!rif) |
4724ba56 IS |
2836 | return true; |
2837 | return false; | |
2838 | case NETDEV_DOWN: | |
bf95233e AS |
2839 | if (rif && !in_dev->ifa_list && |
2840 | !netif_is_l3_slave(rif->dev)) | |
4724ba56 IS |
2841 | return true; |
2842 | /* It is possible we already removed the RIF ourselves | |
2843 | * if it was assigned to a netdev that is now a bridge | |
2844 | * or LAG slave. | |
2845 | */ | |
2846 | return false; | |
2847 | } | |
2848 | ||
2849 | return false; | |
2850 | } | |
2851 | ||
bf95233e | 2852 | #define MLXSW_SP_INVALID_INDEX_RIF 0xffff |
4724ba56 IS |
2853 | static int mlxsw_sp_avail_rif_get(struct mlxsw_sp *mlxsw_sp) |
2854 | { | |
2855 | int i; | |
2856 | ||
2857 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) | |
2858 | if (!mlxsw_sp->rifs[i]) | |
2859 | return i; | |
2860 | ||
bf95233e | 2861 | return MLXSW_SP_INVALID_INDEX_RIF; |
4724ba56 IS |
2862 | } |
2863 | ||
2864 | static void mlxsw_sp_vport_rif_sp_attr_get(struct mlxsw_sp_port *mlxsw_sp_vport, | |
2865 | bool *p_lagged, u16 *p_system_port) | |
2866 | { | |
2867 | u8 local_port = mlxsw_sp_vport->local_port; | |
2868 | ||
2869 | *p_lagged = mlxsw_sp_vport->lagged; | |
2870 | *p_system_port = *p_lagged ? mlxsw_sp_vport->lag_id : local_port; | |
2871 | } | |
2872 | ||
2873 | static int mlxsw_sp_vport_rif_sp_op(struct mlxsw_sp_port *mlxsw_sp_vport, | |
6913229e | 2874 | u16 vr_id, struct net_device *l3_dev, |
bf95233e | 2875 | u16 rif_index, bool create) |
4724ba56 IS |
2876 | { |
2877 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp; | |
2878 | bool lagged = mlxsw_sp_vport->lagged; | |
2879 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
2880 | u16 system_port; | |
2881 | ||
bf95233e AS |
2882 | mlxsw_reg_ritr_pack(ritr_pl, create, MLXSW_REG_RITR_SP_IF, rif_index, |
2883 | vr_id, l3_dev->mtu, l3_dev->dev_addr); | |
4724ba56 IS |
2884 | |
2885 | mlxsw_sp_vport_rif_sp_attr_get(mlxsw_sp_vport, &lagged, &system_port); | |
2886 | mlxsw_reg_ritr_sp_if_pack(ritr_pl, lagged, system_port, | |
2887 | mlxsw_sp_vport_vid_get(mlxsw_sp_vport)); | |
2888 | ||
2889 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
2890 | } | |
2891 | ||
2892 | static void mlxsw_sp_vport_rif_sp_leave(struct mlxsw_sp_port *mlxsw_sp_vport); | |
2893 | ||
bf95233e | 2894 | static u16 mlxsw_sp_rif_sp_to_fid(u16 rif_index) |
4724ba56 | 2895 | { |
bf95233e | 2896 | return MLXSW_SP_RFID_BASE + rif_index; |
4724ba56 IS |
2897 | } |
2898 | ||
2899 | static struct mlxsw_sp_fid * | |
2900 | mlxsw_sp_rfid_alloc(u16 fid, struct net_device *l3_dev) | |
2901 | { | |
2902 | struct mlxsw_sp_fid *f; | |
2903 | ||
2904 | f = kzalloc(sizeof(*f), GFP_KERNEL); | |
2905 | if (!f) | |
2906 | return NULL; | |
2907 | ||
2908 | f->leave = mlxsw_sp_vport_rif_sp_leave; | |
2909 | f->ref_count = 0; | |
2910 | f->dev = l3_dev; | |
2911 | f->fid = fid; | |
2912 | ||
2913 | return f; | |
2914 | } | |
2915 | ||
2916 | static struct mlxsw_sp_rif * | |
bf95233e | 2917 | mlxsw_sp_rif_alloc(u16 rif_index, u16 vr_id, struct net_device *l3_dev, |
6913229e | 2918 | struct mlxsw_sp_fid *f) |
4724ba56 | 2919 | { |
bf95233e | 2920 | struct mlxsw_sp_rif *rif; |
4724ba56 | 2921 | |
bf95233e AS |
2922 | rif = kzalloc(sizeof(*rif), GFP_KERNEL); |
2923 | if (!rif) | |
4724ba56 IS |
2924 | return NULL; |
2925 | ||
bf95233e AS |
2926 | INIT_LIST_HEAD(&rif->nexthop_list); |
2927 | INIT_LIST_HEAD(&rif->neigh_list); | |
2928 | ether_addr_copy(rif->addr, l3_dev->dev_addr); | |
2929 | rif->mtu = l3_dev->mtu; | |
2930 | rif->vr_id = vr_id; | |
2931 | rif->dev = l3_dev; | |
2932 | rif->rif_index = rif_index; | |
2933 | rif->f = f; | |
4724ba56 | 2934 | |
bf95233e | 2935 | return rif; |
4724ba56 IS |
2936 | } |
2937 | ||
fd1b9d41 AS |
2938 | u16 mlxsw_sp_rif_index(const struct mlxsw_sp_rif *rif) |
2939 | { | |
2940 | return rif->rif_index; | |
2941 | } | |
2942 | ||
2943 | int mlxsw_sp_rif_dev_ifindex(const struct mlxsw_sp_rif *rif) | |
2944 | { | |
2945 | return rif->dev->ifindex; | |
2946 | } | |
2947 | ||
4724ba56 IS |
2948 | static struct mlxsw_sp_rif * |
2949 | mlxsw_sp_vport_rif_sp_create(struct mlxsw_sp_port *mlxsw_sp_vport, | |
2950 | struct net_device *l3_dev) | |
2951 | { | |
2952 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp; | |
57837885 | 2953 | u32 tb_id = l3mdev_fib_table(l3_dev); |
6913229e | 2954 | struct mlxsw_sp_vr *vr; |
4724ba56 | 2955 | struct mlxsw_sp_fid *f; |
bf95233e AS |
2956 | struct mlxsw_sp_rif *rif; |
2957 | u16 fid, rif_index; | |
4724ba56 IS |
2958 | int err; |
2959 | ||
bf95233e AS |
2960 | rif_index = mlxsw_sp_avail_rif_get(mlxsw_sp); |
2961 | if (rif_index == MLXSW_SP_INVALID_INDEX_RIF) | |
4724ba56 IS |
2962 | return ERR_PTR(-ERANGE); |
2963 | ||
57837885 | 2964 | vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id ? : RT_TABLE_MAIN); |
6913229e IS |
2965 | if (IS_ERR(vr)) |
2966 | return ERR_CAST(vr); | |
2967 | ||
bf95233e AS |
2968 | err = mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, vr->id, l3_dev, |
2969 | rif_index, true); | |
4724ba56 | 2970 | if (err) |
6913229e | 2971 | goto err_vport_rif_sp_op; |
4724ba56 | 2972 | |
bf95233e | 2973 | fid = mlxsw_sp_rif_sp_to_fid(rif_index); |
4724ba56 IS |
2974 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, true); |
2975 | if (err) | |
2976 | goto err_rif_fdb_op; | |
2977 | ||
2978 | f = mlxsw_sp_rfid_alloc(fid, l3_dev); | |
2979 | if (!f) { | |
2980 | err = -ENOMEM; | |
2981 | goto err_rfid_alloc; | |
2982 | } | |
2983 | ||
bf95233e AS |
2984 | rif = mlxsw_sp_rif_alloc(rif_index, vr->id, l3_dev, f); |
2985 | if (!rif) { | |
4724ba56 IS |
2986 | err = -ENOMEM; |
2987 | goto err_rif_alloc; | |
2988 | } | |
2989 | ||
e0c0afd8 AS |
2990 | if (devlink_dpipe_table_counter_enabled(priv_to_devlink(mlxsw_sp->core), |
2991 | MLXSW_SP_DPIPE_TABLE_NAME_ERIF)) { | |
2992 | err = mlxsw_sp_rif_counter_alloc(mlxsw_sp, rif, | |
2993 | MLXSW_SP_RIF_COUNTER_EGRESS); | |
2994 | if (err) | |
2995 | netdev_dbg(mlxsw_sp_vport->dev, | |
2996 | "Counter alloc Failed err=%d\n", err); | |
2997 | } | |
2998 | ||
bf95233e AS |
2999 | f->rif = rif; |
3000 | mlxsw_sp->rifs[rif_index] = rif; | |
6913229e | 3001 | vr->rif_count++; |
4724ba56 | 3002 | |
bf95233e | 3003 | return rif; |
4724ba56 IS |
3004 | |
3005 | err_rif_alloc: | |
3006 | kfree(f); | |
3007 | err_rfid_alloc: | |
3008 | mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, false); | |
3009 | err_rif_fdb_op: | |
bf95233e AS |
3010 | mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, vr->id, l3_dev, rif_index, |
3011 | false); | |
6913229e IS |
3012 | err_vport_rif_sp_op: |
3013 | mlxsw_sp_vr_put(vr); | |
4724ba56 IS |
3014 | return ERR_PTR(err); |
3015 | } | |
3016 | ||
3017 | static void mlxsw_sp_vport_rif_sp_destroy(struct mlxsw_sp_port *mlxsw_sp_vport, | |
bf95233e | 3018 | struct mlxsw_sp_rif *rif) |
4724ba56 IS |
3019 | { |
3020 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp; | |
bf95233e AS |
3021 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router.vrs[rif->vr_id]; |
3022 | struct net_device *l3_dev = rif->dev; | |
3023 | struct mlxsw_sp_fid *f = rif->f; | |
3024 | u16 rif_index = rif->rif_index; | |
4724ba56 | 3025 | u16 fid = f->fid; |
4724ba56 | 3026 | |
bf95233e | 3027 | mlxsw_sp_router_rif_gone_sync(mlxsw_sp, rif); |
4724ba56 | 3028 | |
e0c0afd8 AS |
3029 | mlxsw_sp_rif_counter_free(mlxsw_sp, rif, MLXSW_SP_RIF_COUNTER_EGRESS); |
3030 | mlxsw_sp_rif_counter_free(mlxsw_sp, rif, MLXSW_SP_RIF_COUNTER_INGRESS); | |
3031 | ||
6913229e | 3032 | vr->rif_count--; |
bf95233e AS |
3033 | mlxsw_sp->rifs[rif_index] = NULL; |
3034 | f->rif = NULL; | |
4724ba56 | 3035 | |
bf95233e | 3036 | kfree(rif); |
4724ba56 IS |
3037 | |
3038 | kfree(f); | |
3039 | ||
3040 | mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, fid, false); | |
3041 | ||
bf95233e AS |
3042 | mlxsw_sp_vport_rif_sp_op(mlxsw_sp_vport, vr->id, l3_dev, rif_index, |
3043 | false); | |
6913229e | 3044 | mlxsw_sp_vr_put(vr); |
4724ba56 IS |
3045 | } |
3046 | ||
3047 | static int mlxsw_sp_vport_rif_sp_join(struct mlxsw_sp_port *mlxsw_sp_vport, | |
3048 | struct net_device *l3_dev) | |
3049 | { | |
3050 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_vport->mlxsw_sp; | |
bf95233e | 3051 | struct mlxsw_sp_rif *rif; |
4724ba56 | 3052 | |
bf95233e AS |
3053 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); |
3054 | if (!rif) { | |
3055 | rif = mlxsw_sp_vport_rif_sp_create(mlxsw_sp_vport, l3_dev); | |
3056 | if (IS_ERR(rif)) | |
3057 | return PTR_ERR(rif); | |
4724ba56 IS |
3058 | } |
3059 | ||
bf95233e AS |
3060 | mlxsw_sp_vport_fid_set(mlxsw_sp_vport, rif->f); |
3061 | rif->f->ref_count++; | |
4724ba56 | 3062 | |
bf95233e | 3063 | netdev_dbg(mlxsw_sp_vport->dev, "Joined FID=%d\n", rif->f->fid); |
4724ba56 IS |
3064 | |
3065 | return 0; | |
3066 | } | |
3067 | ||
3068 | static void mlxsw_sp_vport_rif_sp_leave(struct mlxsw_sp_port *mlxsw_sp_vport) | |
3069 | { | |
3070 | struct mlxsw_sp_fid *f = mlxsw_sp_vport_fid_get(mlxsw_sp_vport); | |
3071 | ||
3072 | netdev_dbg(mlxsw_sp_vport->dev, "Left FID=%d\n", f->fid); | |
3073 | ||
3074 | mlxsw_sp_vport_fid_set(mlxsw_sp_vport, NULL); | |
3075 | if (--f->ref_count == 0) | |
bf95233e | 3076 | mlxsw_sp_vport_rif_sp_destroy(mlxsw_sp_vport, f->rif); |
4724ba56 IS |
3077 | } |
3078 | ||
3079 | static int mlxsw_sp_inetaddr_vport_event(struct net_device *l3_dev, | |
3080 | struct net_device *port_dev, | |
3081 | unsigned long event, u16 vid) | |
3082 | { | |
3083 | struct mlxsw_sp_port *mlxsw_sp_port = netdev_priv(port_dev); | |
3084 | struct mlxsw_sp_port *mlxsw_sp_vport; | |
3085 | ||
3086 | mlxsw_sp_vport = mlxsw_sp_port_vport_find(mlxsw_sp_port, vid); | |
3087 | if (WARN_ON(!mlxsw_sp_vport)) | |
3088 | return -EINVAL; | |
3089 | ||
3090 | switch (event) { | |
3091 | case NETDEV_UP: | |
3092 | return mlxsw_sp_vport_rif_sp_join(mlxsw_sp_vport, l3_dev); | |
3093 | case NETDEV_DOWN: | |
3094 | mlxsw_sp_vport_rif_sp_leave(mlxsw_sp_vport); | |
3095 | break; | |
3096 | } | |
3097 | ||
3098 | return 0; | |
3099 | } | |
3100 | ||
3101 | static int mlxsw_sp_inetaddr_port_event(struct net_device *port_dev, | |
3102 | unsigned long event) | |
3103 | { | |
2b94e58d JP |
3104 | if (netif_is_bridge_port(port_dev) || |
3105 | netif_is_lag_port(port_dev) || | |
3106 | netif_is_ovs_port(port_dev)) | |
4724ba56 IS |
3107 | return 0; |
3108 | ||
3109 | return mlxsw_sp_inetaddr_vport_event(port_dev, port_dev, event, 1); | |
3110 | } | |
3111 | ||
3112 | static int __mlxsw_sp_inetaddr_lag_event(struct net_device *l3_dev, | |
3113 | struct net_device *lag_dev, | |
3114 | unsigned long event, u16 vid) | |
3115 | { | |
3116 | struct net_device *port_dev; | |
3117 | struct list_head *iter; | |
3118 | int err; | |
3119 | ||
3120 | netdev_for_each_lower_dev(lag_dev, port_dev, iter) { | |
3121 | if (mlxsw_sp_port_dev_check(port_dev)) { | |
3122 | err = mlxsw_sp_inetaddr_vport_event(l3_dev, port_dev, | |
3123 | event, vid); | |
3124 | if (err) | |
3125 | return err; | |
3126 | } | |
3127 | } | |
3128 | ||
3129 | return 0; | |
3130 | } | |
3131 | ||
3132 | static int mlxsw_sp_inetaddr_lag_event(struct net_device *lag_dev, | |
3133 | unsigned long event) | |
3134 | { | |
3135 | if (netif_is_bridge_port(lag_dev)) | |
3136 | return 0; | |
3137 | ||
3138 | return __mlxsw_sp_inetaddr_lag_event(lag_dev, lag_dev, event, 1); | |
3139 | } | |
3140 | ||
3141 | static struct mlxsw_sp_fid *mlxsw_sp_bridge_fid_get(struct mlxsw_sp *mlxsw_sp, | |
3142 | struct net_device *l3_dev) | |
3143 | { | |
3144 | u16 fid; | |
3145 | ||
3146 | if (is_vlan_dev(l3_dev)) | |
3147 | fid = vlan_dev_vlan_id(l3_dev); | |
3148 | else if (mlxsw_sp->master_bridge.dev == l3_dev) | |
3149 | fid = 1; | |
3150 | else | |
3151 | return mlxsw_sp_vfid_find(mlxsw_sp, l3_dev); | |
3152 | ||
3153 | return mlxsw_sp_fid_find(mlxsw_sp, fid); | |
3154 | } | |
3155 | ||
5ec2ee7d IS |
3156 | static u8 mlxsw_sp_router_port(const struct mlxsw_sp *mlxsw_sp) |
3157 | { | |
3158 | return mlxsw_core_max_ports(mlxsw_sp->core) + 1; | |
3159 | } | |
3160 | ||
4724ba56 IS |
3161 | static enum mlxsw_flood_table_type mlxsw_sp_flood_table_type_get(u16 fid) |
3162 | { | |
3163 | return mlxsw_sp_fid_is_vfid(fid) ? MLXSW_REG_SFGC_TABLE_TYPE_FID : | |
3164 | MLXSW_REG_SFGC_TABLE_TYPE_FID_OFFEST; | |
3165 | } | |
3166 | ||
3167 | static u16 mlxsw_sp_flood_table_index_get(u16 fid) | |
3168 | { | |
3169 | return mlxsw_sp_fid_is_vfid(fid) ? mlxsw_sp_fid_to_vfid(fid) : fid; | |
3170 | } | |
3171 | ||
3172 | static int mlxsw_sp_router_port_flood_set(struct mlxsw_sp *mlxsw_sp, u16 fid, | |
3173 | bool set) | |
3174 | { | |
5ec2ee7d | 3175 | u8 router_port = mlxsw_sp_router_port(mlxsw_sp); |
4724ba56 IS |
3176 | enum mlxsw_flood_table_type table_type; |
3177 | char *sftr_pl; | |
3178 | u16 index; | |
3179 | int err; | |
3180 | ||
3181 | sftr_pl = kmalloc(MLXSW_REG_SFTR_LEN, GFP_KERNEL); | |
3182 | if (!sftr_pl) | |
3183 | return -ENOMEM; | |
3184 | ||
3185 | table_type = mlxsw_sp_flood_table_type_get(fid); | |
3186 | index = mlxsw_sp_flood_table_index_get(fid); | |
3187 | mlxsw_reg_sftr_pack(sftr_pl, MLXSW_SP_FLOOD_TABLE_BC, index, table_type, | |
5ec2ee7d | 3188 | 1, router_port, set); |
4724ba56 IS |
3189 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(sftr), sftr_pl); |
3190 | ||
3191 | kfree(sftr_pl); | |
3192 | return err; | |
3193 | } | |
3194 | ||
3195 | static enum mlxsw_reg_ritr_if_type mlxsw_sp_rif_type_get(u16 fid) | |
3196 | { | |
3197 | if (mlxsw_sp_fid_is_vfid(fid)) | |
3198 | return MLXSW_REG_RITR_FID_IF; | |
3199 | else | |
3200 | return MLXSW_REG_RITR_VLAN_IF; | |
3201 | } | |
3202 | ||
6913229e | 3203 | static int mlxsw_sp_rif_bridge_op(struct mlxsw_sp *mlxsw_sp, u16 vr_id, |
4724ba56 IS |
3204 | struct net_device *l3_dev, |
3205 | u16 fid, u16 rif, | |
3206 | bool create) | |
3207 | { | |
3208 | enum mlxsw_reg_ritr_if_type rif_type; | |
3209 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
3210 | ||
3211 | rif_type = mlxsw_sp_rif_type_get(fid); | |
6913229e | 3212 | mlxsw_reg_ritr_pack(ritr_pl, create, rif_type, rif, vr_id, l3_dev->mtu, |
4724ba56 IS |
3213 | l3_dev->dev_addr); |
3214 | mlxsw_reg_ritr_fid_set(ritr_pl, rif_type, fid); | |
3215 | ||
3216 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
3217 | } | |
3218 | ||
3219 | static int mlxsw_sp_rif_bridge_create(struct mlxsw_sp *mlxsw_sp, | |
3220 | struct net_device *l3_dev, | |
3221 | struct mlxsw_sp_fid *f) | |
3222 | { | |
57837885 | 3223 | u32 tb_id = l3mdev_fib_table(l3_dev); |
bf95233e | 3224 | struct mlxsw_sp_rif *rif; |
6913229e | 3225 | struct mlxsw_sp_vr *vr; |
bf95233e | 3226 | u16 rif_index; |
4724ba56 IS |
3227 | int err; |
3228 | ||
bf95233e AS |
3229 | rif_index = mlxsw_sp_avail_rif_get(mlxsw_sp); |
3230 | if (rif_index == MLXSW_SP_INVALID_INDEX_RIF) | |
4724ba56 IS |
3231 | return -ERANGE; |
3232 | ||
57837885 | 3233 | vr = mlxsw_sp_vr_get(mlxsw_sp, tb_id ? : RT_TABLE_MAIN); |
6913229e IS |
3234 | if (IS_ERR(vr)) |
3235 | return PTR_ERR(vr); | |
3236 | ||
4724ba56 IS |
3237 | err = mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, true); |
3238 | if (err) | |
6913229e | 3239 | goto err_port_flood_set; |
4724ba56 | 3240 | |
bf95233e AS |
3241 | err = mlxsw_sp_rif_bridge_op(mlxsw_sp, vr->id, l3_dev, f->fid, |
3242 | rif_index, true); | |
4724ba56 IS |
3243 | if (err) |
3244 | goto err_rif_bridge_op; | |
3245 | ||
3246 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, true); | |
3247 | if (err) | |
3248 | goto err_rif_fdb_op; | |
3249 | ||
bf95233e AS |
3250 | rif = mlxsw_sp_rif_alloc(rif_index, vr->id, l3_dev, f); |
3251 | if (!rif) { | |
4724ba56 IS |
3252 | err = -ENOMEM; |
3253 | goto err_rif_alloc; | |
3254 | } | |
3255 | ||
bf95233e AS |
3256 | f->rif = rif; |
3257 | mlxsw_sp->rifs[rif_index] = rif; | |
6913229e | 3258 | vr->rif_count++; |
4724ba56 | 3259 | |
bf95233e | 3260 | netdev_dbg(l3_dev, "RIF=%d created\n", rif_index); |
4724ba56 IS |
3261 | |
3262 | return 0; | |
3263 | ||
3264 | err_rif_alloc: | |
3265 | mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, false); | |
3266 | err_rif_fdb_op: | |
bf95233e AS |
3267 | mlxsw_sp_rif_bridge_op(mlxsw_sp, vr->id, l3_dev, f->fid, rif_index, |
3268 | false); | |
4724ba56 IS |
3269 | err_rif_bridge_op: |
3270 | mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false); | |
6913229e IS |
3271 | err_port_flood_set: |
3272 | mlxsw_sp_vr_put(vr); | |
4724ba56 IS |
3273 | return err; |
3274 | } | |
3275 | ||
3276 | void mlxsw_sp_rif_bridge_destroy(struct mlxsw_sp *mlxsw_sp, | |
bf95233e | 3277 | struct mlxsw_sp_rif *rif) |
4724ba56 | 3278 | { |
bf95233e AS |
3279 | struct mlxsw_sp_vr *vr = &mlxsw_sp->router.vrs[rif->vr_id]; |
3280 | struct net_device *l3_dev = rif->dev; | |
3281 | struct mlxsw_sp_fid *f = rif->f; | |
3282 | u16 rif_index = rif->rif_index; | |
4724ba56 | 3283 | |
bf95233e | 3284 | mlxsw_sp_router_rif_gone_sync(mlxsw_sp, rif); |
4724ba56 | 3285 | |
6913229e | 3286 | vr->rif_count--; |
bf95233e AS |
3287 | mlxsw_sp->rifs[rif_index] = NULL; |
3288 | f->rif = NULL; | |
4724ba56 | 3289 | |
bf95233e | 3290 | kfree(rif); |
4724ba56 IS |
3291 | |
3292 | mlxsw_sp_rif_fdb_op(mlxsw_sp, l3_dev->dev_addr, f->fid, false); | |
3293 | ||
bf95233e AS |
3294 | mlxsw_sp_rif_bridge_op(mlxsw_sp, vr->id, l3_dev, f->fid, rif_index, |
3295 | false); | |
4724ba56 IS |
3296 | |
3297 | mlxsw_sp_router_port_flood_set(mlxsw_sp, f->fid, false); | |
3298 | ||
6913229e IS |
3299 | mlxsw_sp_vr_put(vr); |
3300 | ||
bf95233e | 3301 | netdev_dbg(l3_dev, "RIF=%d destroyed\n", rif_index); |
4724ba56 IS |
3302 | } |
3303 | ||
3304 | static int mlxsw_sp_inetaddr_bridge_event(struct net_device *l3_dev, | |
3305 | struct net_device *br_dev, | |
3306 | unsigned long event) | |
3307 | { | |
3308 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev); | |
3309 | struct mlxsw_sp_fid *f; | |
3310 | ||
3311 | /* FID can either be an actual FID if the L3 device is the | |
3312 | * VLAN-aware bridge or a VLAN device on top. Otherwise, the | |
3313 | * L3 device is a VLAN-unaware bridge and we get a vFID. | |
3314 | */ | |
3315 | f = mlxsw_sp_bridge_fid_get(mlxsw_sp, l3_dev); | |
3316 | if (WARN_ON(!f)) | |
3317 | return -EINVAL; | |
3318 | ||
3319 | switch (event) { | |
3320 | case NETDEV_UP: | |
3321 | return mlxsw_sp_rif_bridge_create(mlxsw_sp, l3_dev, f); | |
3322 | case NETDEV_DOWN: | |
bf95233e | 3323 | mlxsw_sp_rif_bridge_destroy(mlxsw_sp, f->rif); |
4724ba56 IS |
3324 | break; |
3325 | } | |
3326 | ||
3327 | return 0; | |
3328 | } | |
3329 | ||
3330 | static int mlxsw_sp_inetaddr_vlan_event(struct net_device *vlan_dev, | |
3331 | unsigned long event) | |
3332 | { | |
3333 | struct net_device *real_dev = vlan_dev_real_dev(vlan_dev); | |
3334 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(vlan_dev); | |
3335 | u16 vid = vlan_dev_vlan_id(vlan_dev); | |
3336 | ||
3337 | if (mlxsw_sp_port_dev_check(real_dev)) | |
3338 | return mlxsw_sp_inetaddr_vport_event(vlan_dev, real_dev, event, | |
3339 | vid); | |
3340 | else if (netif_is_lag_master(real_dev)) | |
3341 | return __mlxsw_sp_inetaddr_lag_event(vlan_dev, real_dev, event, | |
3342 | vid); | |
3343 | else if (netif_is_bridge_master(real_dev) && | |
3344 | mlxsw_sp->master_bridge.dev == real_dev) | |
3345 | return mlxsw_sp_inetaddr_bridge_event(vlan_dev, real_dev, | |
3346 | event); | |
3347 | ||
3348 | return 0; | |
3349 | } | |
3350 | ||
b1e45526 IS |
3351 | static int __mlxsw_sp_inetaddr_event(struct net_device *dev, |
3352 | unsigned long event) | |
3353 | { | |
3354 | if (mlxsw_sp_port_dev_check(dev)) | |
3355 | return mlxsw_sp_inetaddr_port_event(dev, event); | |
3356 | else if (netif_is_lag_master(dev)) | |
3357 | return mlxsw_sp_inetaddr_lag_event(dev, event); | |
3358 | else if (netif_is_bridge_master(dev)) | |
3359 | return mlxsw_sp_inetaddr_bridge_event(dev, dev, event); | |
3360 | else if (is_vlan_dev(dev)) | |
3361 | return mlxsw_sp_inetaddr_vlan_event(dev, event); | |
3362 | else | |
3363 | return 0; | |
3364 | } | |
3365 | ||
4724ba56 IS |
3366 | int mlxsw_sp_inetaddr_event(struct notifier_block *unused, |
3367 | unsigned long event, void *ptr) | |
3368 | { | |
3369 | struct in_ifaddr *ifa = (struct in_ifaddr *) ptr; | |
3370 | struct net_device *dev = ifa->ifa_dev->dev; | |
3371 | struct mlxsw_sp *mlxsw_sp; | |
bf95233e | 3372 | struct mlxsw_sp_rif *rif; |
4724ba56 IS |
3373 | int err = 0; |
3374 | ||
3375 | mlxsw_sp = mlxsw_sp_lower_get(dev); | |
3376 | if (!mlxsw_sp) | |
3377 | goto out; | |
3378 | ||
bf95233e AS |
3379 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); |
3380 | if (!mlxsw_sp_rif_should_config(rif, ifa->ifa_dev, event)) | |
4724ba56 IS |
3381 | goto out; |
3382 | ||
b1e45526 | 3383 | err = __mlxsw_sp_inetaddr_event(dev, event); |
4724ba56 IS |
3384 | out: |
3385 | return notifier_from_errno(err); | |
3386 | } | |
3387 | ||
bf95233e | 3388 | static int mlxsw_sp_rif_edit(struct mlxsw_sp *mlxsw_sp, u16 rif_index, |
4724ba56 IS |
3389 | const char *mac, int mtu) |
3390 | { | |
3391 | char ritr_pl[MLXSW_REG_RITR_LEN]; | |
3392 | int err; | |
3393 | ||
bf95233e | 3394 | mlxsw_reg_ritr_rif_pack(ritr_pl, rif_index); |
4724ba56 IS |
3395 | err = mlxsw_reg_query(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); |
3396 | if (err) | |
3397 | return err; | |
3398 | ||
3399 | mlxsw_reg_ritr_mtu_set(ritr_pl, mtu); | |
3400 | mlxsw_reg_ritr_if_mac_memcpy_to(ritr_pl, mac); | |
3401 | mlxsw_reg_ritr_op_set(ritr_pl, MLXSW_REG_RITR_RIF_CREATE); | |
3402 | return mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(ritr), ritr_pl); | |
3403 | } | |
3404 | ||
3405 | int mlxsw_sp_netdevice_router_port_event(struct net_device *dev) | |
3406 | { | |
3407 | struct mlxsw_sp *mlxsw_sp; | |
bf95233e | 3408 | struct mlxsw_sp_rif *rif; |
4724ba56 IS |
3409 | int err; |
3410 | ||
3411 | mlxsw_sp = mlxsw_sp_lower_get(dev); | |
3412 | if (!mlxsw_sp) | |
3413 | return 0; | |
3414 | ||
bf95233e AS |
3415 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, dev); |
3416 | if (!rif) | |
4724ba56 IS |
3417 | return 0; |
3418 | ||
bf95233e | 3419 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->addr, rif->f->fid, false); |
4724ba56 IS |
3420 | if (err) |
3421 | return err; | |
3422 | ||
bf95233e AS |
3423 | err = mlxsw_sp_rif_edit(mlxsw_sp, rif->rif_index, dev->dev_addr, |
3424 | dev->mtu); | |
4724ba56 IS |
3425 | if (err) |
3426 | goto err_rif_edit; | |
3427 | ||
bf95233e | 3428 | err = mlxsw_sp_rif_fdb_op(mlxsw_sp, dev->dev_addr, rif->f->fid, true); |
4724ba56 IS |
3429 | if (err) |
3430 | goto err_rif_fdb_op; | |
3431 | ||
bf95233e AS |
3432 | ether_addr_copy(rif->addr, dev->dev_addr); |
3433 | rif->mtu = dev->mtu; | |
4724ba56 | 3434 | |
bf95233e | 3435 | netdev_dbg(dev, "Updated RIF=%d\n", rif->rif_index); |
4724ba56 IS |
3436 | |
3437 | return 0; | |
3438 | ||
3439 | err_rif_fdb_op: | |
bf95233e | 3440 | mlxsw_sp_rif_edit(mlxsw_sp, rif->rif_index, rif->addr, rif->mtu); |
4724ba56 | 3441 | err_rif_edit: |
bf95233e | 3442 | mlxsw_sp_rif_fdb_op(mlxsw_sp, rif->addr, rif->f->fid, true); |
4724ba56 IS |
3443 | return err; |
3444 | } | |
3445 | ||
b1e45526 IS |
3446 | static int mlxsw_sp_port_vrf_join(struct mlxsw_sp *mlxsw_sp, |
3447 | struct net_device *l3_dev) | |
7179eb5a | 3448 | { |
b1e45526 | 3449 | struct mlxsw_sp_rif *rif; |
7179eb5a | 3450 | |
b1e45526 IS |
3451 | /* If netdev is already associated with a RIF, then we need to |
3452 | * destroy it and create a new one with the new virtual router ID. | |
7179eb5a | 3453 | */ |
b1e45526 IS |
3454 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); |
3455 | if (rif) | |
3456 | __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_DOWN); | |
7179eb5a | 3457 | |
b1e45526 | 3458 | return __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_UP); |
7179eb5a IS |
3459 | } |
3460 | ||
b1e45526 IS |
3461 | static void mlxsw_sp_port_vrf_leave(struct mlxsw_sp *mlxsw_sp, |
3462 | struct net_device *l3_dev) | |
7179eb5a | 3463 | { |
b1e45526 | 3464 | struct mlxsw_sp_rif *rif; |
7179eb5a | 3465 | |
b1e45526 IS |
3466 | rif = mlxsw_sp_rif_find_by_dev(mlxsw_sp, l3_dev); |
3467 | if (!rif) | |
7179eb5a | 3468 | return; |
b1e45526 | 3469 | __mlxsw_sp_inetaddr_event(l3_dev, NETDEV_DOWN); |
7179eb5a IS |
3470 | } |
3471 | ||
b1e45526 IS |
3472 | int mlxsw_sp_netdevice_vrf_event(struct net_device *l3_dev, unsigned long event, |
3473 | struct netdev_notifier_changeupper_info *info) | |
3d70e458 | 3474 | { |
b1e45526 IS |
3475 | struct mlxsw_sp *mlxsw_sp = mlxsw_sp_lower_get(l3_dev); |
3476 | int err = 0; | |
3d70e458 | 3477 | |
b1e45526 IS |
3478 | if (!mlxsw_sp) |
3479 | return 0; | |
3d70e458 | 3480 | |
b1e45526 IS |
3481 | switch (event) { |
3482 | case NETDEV_PRECHANGEUPPER: | |
3483 | return 0; | |
3484 | case NETDEV_CHANGEUPPER: | |
3485 | if (info->linking) | |
3486 | err = mlxsw_sp_port_vrf_join(mlxsw_sp, l3_dev); | |
3487 | else | |
3488 | mlxsw_sp_port_vrf_leave(mlxsw_sp, l3_dev); | |
3489 | break; | |
3490 | } | |
3d70e458 | 3491 | |
b1e45526 | 3492 | return err; |
3d70e458 IS |
3493 | } |
3494 | ||
c3852ef7 IS |
3495 | static void mlxsw_sp_router_fib_dump_flush(struct notifier_block *nb) |
3496 | { | |
3497 | struct mlxsw_sp *mlxsw_sp = container_of(nb, struct mlxsw_sp, fib_nb); | |
3498 | ||
3499 | /* Flush pending FIB notifications and then flush the device's | |
3500 | * table before requesting another dump. The FIB notification | |
3501 | * block is unregistered, so no need to take RTNL. | |
3502 | */ | |
3503 | mlxsw_core_flush_owq(); | |
3504 | mlxsw_sp_router_fib_flush(mlxsw_sp); | |
3505 | } | |
3506 | ||
4724ba56 IS |
3507 | static int __mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp) |
3508 | { | |
3509 | char rgcr_pl[MLXSW_REG_RGCR_LEN]; | |
3510 | u64 max_rifs; | |
3511 | int err; | |
3512 | ||
3513 | if (!MLXSW_CORE_RES_VALID(mlxsw_sp->core, MAX_RIFS)) | |
3514 | return -EIO; | |
3515 | ||
3516 | max_rifs = MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); | |
3517 | mlxsw_sp->rifs = kcalloc(max_rifs, sizeof(struct mlxsw_sp_rif *), | |
3518 | GFP_KERNEL); | |
3519 | if (!mlxsw_sp->rifs) | |
3520 | return -ENOMEM; | |
3521 | ||
3522 | mlxsw_reg_rgcr_pack(rgcr_pl, true); | |
3523 | mlxsw_reg_rgcr_max_router_interfaces_set(rgcr_pl, max_rifs); | |
3524 | err = mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl); | |
3525 | if (err) | |
3526 | goto err_rgcr_fail; | |
3527 | ||
3528 | return 0; | |
3529 | ||
3530 | err_rgcr_fail: | |
3531 | kfree(mlxsw_sp->rifs); | |
3532 | return err; | |
3533 | } | |
3534 | ||
3535 | static void __mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp) | |
3536 | { | |
3537 | char rgcr_pl[MLXSW_REG_RGCR_LEN]; | |
3538 | int i; | |
3539 | ||
3540 | mlxsw_reg_rgcr_pack(rgcr_pl, false); | |
3541 | mlxsw_reg_write(mlxsw_sp->core, MLXSW_REG(rgcr), rgcr_pl); | |
3542 | ||
3543 | for (i = 0; i < MLXSW_CORE_RES_GET(mlxsw_sp->core, MAX_RIFS); i++) | |
3544 | WARN_ON_ONCE(mlxsw_sp->rifs[i]); | |
3545 | ||
3546 | kfree(mlxsw_sp->rifs); | |
3547 | } | |
3548 | ||
b45f64d1 JP |
3549 | int mlxsw_sp_router_init(struct mlxsw_sp *mlxsw_sp) |
3550 | { | |
3551 | int err; | |
3552 | ||
3553 | INIT_LIST_HEAD(&mlxsw_sp->router.nexthop_neighs_list); | |
b45f64d1 JP |
3554 | err = __mlxsw_sp_router_init(mlxsw_sp); |
3555 | if (err) | |
3556 | return err; | |
3557 | ||
c53b8e1b IS |
3558 | err = rhashtable_init(&mlxsw_sp->router.nexthop_ht, |
3559 | &mlxsw_sp_nexthop_ht_params); | |
3560 | if (err) | |
3561 | goto err_nexthop_ht_init; | |
3562 | ||
e9ad5e7d IS |
3563 | err = rhashtable_init(&mlxsw_sp->router.nexthop_group_ht, |
3564 | &mlxsw_sp_nexthop_group_ht_params); | |
3565 | if (err) | |
3566 | goto err_nexthop_group_ht_init; | |
3567 | ||
8494ab06 IS |
3568 | err = mlxsw_sp_lpm_init(mlxsw_sp); |
3569 | if (err) | |
3570 | goto err_lpm_init; | |
3571 | ||
b45f64d1 JP |
3572 | err = mlxsw_sp_vrs_init(mlxsw_sp); |
3573 | if (err) | |
3574 | goto err_vrs_init; | |
3575 | ||
8c9583a8 | 3576 | err = mlxsw_sp_neigh_init(mlxsw_sp); |
b45f64d1 JP |
3577 | if (err) |
3578 | goto err_neigh_init; | |
3579 | ||
3580 | mlxsw_sp->fib_nb.notifier_call = mlxsw_sp_router_fib_event; | |
c3852ef7 IS |
3581 | err = register_fib_notifier(&mlxsw_sp->fib_nb, |
3582 | mlxsw_sp_router_fib_dump_flush); | |
3583 | if (err) | |
3584 | goto err_register_fib_notifier; | |
3585 | ||
b45f64d1 JP |
3586 | return 0; |
3587 | ||
c3852ef7 IS |
3588 | err_register_fib_notifier: |
3589 | mlxsw_sp_neigh_fini(mlxsw_sp); | |
b45f64d1 JP |
3590 | err_neigh_init: |
3591 | mlxsw_sp_vrs_fini(mlxsw_sp); | |
3592 | err_vrs_init: | |
8494ab06 IS |
3593 | mlxsw_sp_lpm_fini(mlxsw_sp); |
3594 | err_lpm_init: | |
e9ad5e7d IS |
3595 | rhashtable_destroy(&mlxsw_sp->router.nexthop_group_ht); |
3596 | err_nexthop_group_ht_init: | |
c53b8e1b IS |
3597 | rhashtable_destroy(&mlxsw_sp->router.nexthop_ht); |
3598 | err_nexthop_ht_init: | |
b45f64d1 JP |
3599 | __mlxsw_sp_router_fini(mlxsw_sp); |
3600 | return err; | |
3601 | } | |
3602 | ||
3603 | void mlxsw_sp_router_fini(struct mlxsw_sp *mlxsw_sp) | |
3604 | { | |
3605 | unregister_fib_notifier(&mlxsw_sp->fib_nb); | |
3606 | mlxsw_sp_neigh_fini(mlxsw_sp); | |
3607 | mlxsw_sp_vrs_fini(mlxsw_sp); | |
8494ab06 | 3608 | mlxsw_sp_lpm_fini(mlxsw_sp); |
e9ad5e7d | 3609 | rhashtable_destroy(&mlxsw_sp->router.nexthop_group_ht); |
c53b8e1b | 3610 | rhashtable_destroy(&mlxsw_sp->router.nexthop_ht); |
b45f64d1 JP |
3611 | __mlxsw_sp_router_fini(mlxsw_sp); |
3612 | } |